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All questions of November Week 3 for Class 10 Exam

We use __________ lens to correct Hypermetropia
  • a)
    Biconvex
  • b)
    Biconcave
  • c)
    Concave
  • d)
    Convex
Correct answer is option 'D'. Can you explain this answer?

Anjali Kapoor answered
Concave lenses are used here. They spread the light out before it reaches the convex lens in the eye, therefore letting the image focus directly on the retina. Hyperopia is known to you probably as farsightedness.

The near point of a human eye is at a distance of
  • a)
    10 cm
  • b)
    20 cm
  • c)
    40 cm
  • d)
    25 cm
Correct answer is option 'D'. Can you explain this answer?

Abhi Prajapati answered
The near point of the eye is the minimum distance of the object from the eye, which can be seen distinctly without strain. For a normal human eye, this distance is 25 cm. The far point of the eye is the maximum distance to which the eye can see the objects clearly. The far point of the normal human eye is infinity.

Parties are a necessary condition for a
  • a)
    democracy
  • b)
    authoritarian
  • c)
    dictatorship
  • d)
    none of the above
Correct answer is option 'A'. Can you explain this answer?

Arun Sharma answered
1. Without political parties, democracies cannot exist. If we do not have political parties, every candidate will be independent.
2.  No one will be able to make any promises to people about major policy changes. 

Cataract can be cured by
  • a)
    Bi-focal Lens
  • b)
    Convex Lens
  • c)
    Surgery
  • d)
    Concave lens
Correct answer is option 'C'. Can you explain this answer?

Rohan Kapoor answered
Surgery to treat cataracts involves removing the clouded lens and replacing it with a synthetic new one. This procedure is safe and very effective.They're researching eye drops that may dissolve cataracts so patients don't have to go to surgery.

A boy is wearing glasses and says that he cannot see the object kept at a distance without glasses. He is suffering from
  • a)
    Hypermetropia
  • b)
    Cataract
  • c)
    Presbyopia
  • d)
    Myopia
Correct answer is option 'D'. Can you explain this answer?

Raghav Bansal answered
As Myopia is a defect of vision in which a person cannot see the distant object clearly. This can be corrected by using the concave lens of appropriate focal length

A person with defective eyesight is unable to see objects clearly nearer than 1.5 m. He wants to read a book placed at a distance of 30 cm from his eyes. The type of a required lens and its focal length is​
  • a)
    Concave lens, f = 37.5 cm
  • b)
    Convex lens, f = 30.5 cm
  • c)
    Convex lens, f = 37.5 cm
  • d)
    Concave lens, f = 30.5 cm
Correct answer is option 'C'. Can you explain this answer?

Rahul Kapoor answered
This person suffers from the defect of hypermetropia.
For him u = -30cm, v = -1.5 m = -150cm
Therefore, focal length of corrective lens to be used by him is
1/f = 1/v- 1/u = 1/-150 - 1/-30 = 4/150 = 37.5cm
The positive sign shows that the lens needed is a convex lens of focal length 37.5 cm.
Hence, power of lens needed
P =1/f = 100/37.5 = 2.67D

Match List I (organisations and struggles) with List-II, and select the correct answer using the codes given below the list:

  • a)
    a
  • b)
    b
  • c)
    c
  • d)
    d
Correct answer is option 'C'. Can you explain this answer?

Gunjan Lakhani answered
1. Congress Party - United Progressive Alliance
2. Bharatiya Janata Party - National Democratic Alliance
3. Communist Party of India (Marxist) - Left Front
4. Telugu Desam Party - State/Regional Party

Which one of the following is a better way of carrying out political reforms in a democratic country?
  • a)
    Legal changes
  • b)
    The Constitutional changes
  • c)
    The empowerment of people
  • d)
    The legislation for reform
Correct answer is option 'C'. Can you explain this answer?

Nirmal Kumar answered
The empowerment of people is a better way of carrying out political reforms in a democratic country because this should increase and improve the equality of ordinary citizens in political participation.

If the image was formed in front of the retina rather than behind the retina, then the person would need to correct the vision problem by using a:
  • a)
    converging lens
  • b)
    diverging lens
  • c)
    polar lens
  • d)
    achromatic lens
Correct answer is option 'B'. Can you explain this answer?

Raghav Bansal answered
Nearsighted individuals have image formed in front of the retina. They must correct the problem by wearing a lens which provides for some diverging of light prior to reaching the lens of the eye. This will move the image further from the lens of the eye and back towards the retina.

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?​
  • a)
    diverging lens of power +1.25 D
  • b)
    converging lens of power +1.25 D
  • c)
    diverging lens of power -1.25 D
  • d)
    converging lens of power -1.25 D
Correct answer is option 'C'. Can you explain this answer?

Anjana Khatri answered
Far point of the defective eye, v = -80 cm

Object distance, u = -∞ (-infinity)

To find :

Nature and power of the corrective lens.

Solution :

1/v - 1/u = 1/f

1/f = 1/(-80) - 1/(-∞) 

1/f = - 1/80 + 0          [Since, 1/-∞ = 0]

1/f = - 1/80

f = -80 cm

Therefore, the corrective lens should be of the focal length 80 cm.

Power, P = 1 / focal length

As focal length is in centimetres, 1 m = 100 cm.

P = 100 / -80

P = -1.25 D

Therefore, the corrective lens is diverging or concave lens of power -1.5 D.

Image is formed for the shortsighted person:
  • a)
    Eye lens
  • b)
    Before retina
  • c)
    At retina
  • d)
    Behind retina
Correct answer is option 'B'. Can you explain this answer?

Naina Kaur answered
Short-sightedness (myopia) usually occurs when the eyes grow slightly too long, which means they're unable to produce a clear image of objects in the distance.

If a person with hypermetropia struggles to see objects placed closer than 50 cm, what is the power of the lens needed to correct this vision?
  • a)
    +2 D
  • b)
    -2 D
  • c)
    +1 D
  • d)
    -1 D
Correct answer is option 'A'. Can you explain this answer?

Upsc Toppers answered
For hypermetropia where the near point is significantly further than normal, a convex lens with a positive power, such as +2 D, is required to converge light rays correctly on the retina.

The political party which beliefs in Marxism-Leninism is
  • a)
    Nationalist Congress Party
  • b)
    Communist Party of India
  • c)
    Dravida Munnetra Kazhagam (DMK)
  • d)
    Bahujan Samaj Party
Correct answer is option 'B'. Can you explain this answer?

Raghav Bansal answered
The CPI came into existence in 1964 as a result of the division of the communist party of India. It is against capitalism and believes in socialism, democracy and secularism.

What is one of the key measures implemented by the Supreme Court to reduce the influence of money and criminals in elections?
  • a)
    Requiring political parties to hold internal elections
  • b)
    Making it mandatory for political parties to disclose their income tax returns
  • c)
    Enforcing the disclosure of property details and pending criminal cases by election candidates
  • d)
    Providing state funding for election expenses
Correct answer is option 'C'. Can you explain this answer?

Key Measure to Reduce Influence of Money and Criminals
The Supreme Court has taken significant steps to mitigate the impact of money and criminality in elections, with one of the most impactful measures being the enforcement of disclosure requirements for election candidates.
Disclosure of Property Details
- Candidates must declare their assets, including property and financial holdings.
- This transparency helps voters understand the financial background of the candidates, allowing for informed voting decisions.
Pending Criminal Cases Disclosure
- Candidates are required to disclose any pending criminal cases against them.
- This measure aims to ensure that voters are aware of any legal issues associated with a candidate, thus promoting accountability and integrity in the electoral process.
Impact of Disclosure
- The requirement for candidates to disclose their economic and criminal backgrounds aims to democratize the electoral process.
- It deters individuals with dubious financial dealings or criminal backgrounds from participating in politics, thus fostering a cleaner political environment.
Voter Awareness
- By making this information public, voters can make more informed choices at the polls.
- Increased awareness about the candidates’ backgrounds encourages civic engagement and accountability.
Conclusion
The enforcement of property and criminal case disclosures is a crucial measure implemented by the Supreme Court to reduce the influence of money and criminals in elections, ultimately aiming for a more transparent and fair electoral system.

What is the primary function of political parties in a democratic system?
  • a)
    Executing policies and programs
  • b)
    Influencing international relations
  • c)
    Enacting judicial reforms
  • d)
    Managing economic regulations
Correct answer is option 'A'. Can you explain this answer?

Nk Classes answered
Political parties in a democratic system primarily function by putting forward different policies and programs for the voters to choose from. This process helps in grouping a large number of diverse opinions into a few basic positions, providing a direction for policy formulation by the government. By contesting elections, parties seek popular support to execute their proposed policies and programs, ultimately influencing the governance of a country.

What is the primary ideology underpinning the formation of the Aam Aadmi Party (AAP) in India?
  • a)
    Secularism and religious tolerance
  • b)
    Economic liberalization and privatization
  • c)
    Accountability, transparency, and good governance
  • d)
    Caste-based reservation and empowerment
Correct answer is option 'C'. Can you explain this answer?

Primary Ideology of Aam Aadmi Party (AAP)
The Aam Aadmi Party (AAP) was formed in 2012, primarily emerging from the anti-corruption movement in India. The key ideology that underpins its formation can be summarized as follows:
Accountability and Transparency
- AAP was founded on the belief that the government should be accountable to the people.
- The party advocates for transparency in governance, ensuring that citizens have access to information about government actions and decisions.
Good Governance
- AAP aims to deliver good governance, which means effective public administration, service delivery, and responsiveness to citizens' needs.
- The party emphasizes the need for clean politics, free from corruption and nepotism.
Impact of the Anti-Corruption Movement
- The movement led by Anna Hazare highlighted widespread corruption, prompting citizens to seek a political solution.
- AAP emerged as a direct response, promising to create a system where officials are accountable for their actions.
Grassroots Participation
- AAP promotes grassroots participation in politics, encouraging ordinary citizens to engage in the political process.
- The party prioritizes the voices of those typically marginalized, aiming to empower them through representation.
In summary, the Aam Aadmi Party's primary ideology revolves around accountability, transparency, and good governance, setting it apart from other political entities in India that might focus more on economic policies or caste dynamics. Through these principles, AAP seeks to reform the political landscape and address the pressing issues of corruption and inefficiency in governance.

What is the primary characteristic of partisanship ?
  • a)
    Striving for a balanced view
  • b)
    Tendency to take a side
  • c)
    Ability to consider all perspectives
  • d)
    Avoiding affiliations
Correct answer is option 'B'. Can you explain this answer?

Partisanship is marked by a strong commitment to a party, group, or faction, and it involves a tendency to take a side rather than maintaining a balanced view. In political contexts, individuals exhibiting partisanship are inclined to support their chosen party's policies and positions without necessarily considering alternative viewpoints.

What trend has been observed regarding the level of trust in political parties in India?
  • a)
    Trust in political parties has significantly increased over the last decade.
  • b)
    Trust in political parties is higher in India compared to most advanced countries.
  • c)
    Trust in political parties has steadily declined over the past three decades.
  • d)
    Trust in political parties is at an all-time low in India.
Correct answer is option 'B'. Can you explain this answer?

Nk Classes answered
Trust in political parties in India is relatively high compared to many advanced countries like Canada, Japan, Spain, and South Korea. Despite the general lack of trust in political parties globally, the level of participation in political party activities has been fairly high in India, indicating a significant level of engagement and affiliation with political organizations among the populace.

What is the main cause of myopia?
  • a)
    Decrease in focal length of the eye lens
  • b)
    Elongation of the eyeball
  • c)
    Increase in focal length of the eye lens
  • d)
    Decrease in size of the eye lens
Correct answer is option 'B'. Can you explain this answer?

Pragya shah answered
The Main Cause of Myopia
Myopia, commonly known as nearsightedness, is a visual condition where distant objects appear blurry while close objects can be seen clearly. The primary cause of myopia is the elongation of the eyeball.
Understanding Elongation of the Eyeball
- The eyeball is normally round, allowing light to focus correctly on the retina.
- In myopia, the eyeball becomes elongated from front to back.
- This elongation means that light rays entering the eye converge before they reach the retina.
Effects of Myopia
- When light is not focused directly on the retina, it leads to blurred vision for distant objects.
- Individuals with myopia often find it difficult to see clearly when looking at things far away, such as road signs or a blackboard in class.
Other Contributing Factors
- Genetics: Myopia can run in families, indicating a genetic predisposition.
- Environmental Factors: Prolonged close-up work, such as reading or using screens, can contribute to the development of myopia.
- Lack of Outdoor Activity: Studies suggest that spending more time outdoors may help reduce the risk of developing myopia.
Conclusion
Understanding that the elongation of the eyeball is the main cause of myopia helps identify the nature of the condition. Treatment options include corrective lenses, contact lenses, or refractive surgery, depending on the severity of the condition. Recognizing these factors can aid in prevention and management strategies for maintaining good vision health.

Why did political parties become so omnipresent in democracies all over the world?
  • a)
    Due to their role in promoting social and political divisions
  • b)
    Because they are essential for maintaining a healthy democracy
  • c)
    As a result of their historical significance in governmental systems
  • d)
    Because they provide a platform for citizens to express their opinions
Correct answer is option 'B'. Can you explain this answer?

Political parties have become omnipresent in democracies worldwide due to their essential role in representing diverse viewpoints, facilitating governance, and ensuring the functioning of a healthy democratic system. They play a crucial role in organizing political competition, mobilizing citizens, and shaping public policy. In essence, political parties serve as key intermediaries between the government and the public, helping to articulate and address the needs and concerns of different segments of society.

How do political parties typically select their candidates for elections?
  • a)
    Through public referendums
  • b)
    By appointing top officials
  • c)
    By popular vote of party members
  • d)
    By lottery selection
Correct answer is option 'C'. Can you explain this answer?

Ritika Mishra answered
Candidate Selection in Political Parties
Political parties play a crucial role in the democratic process, and selecting candidates for elections is a key function they perform. The method used by most political parties is through popular vote of party members.
Popular Vote of Party Members
- Democratic Process: Political parties often hold internal elections where registered party members can vote for their preferred candidates. This process ensures that the candidates reflect the will of the party base.
- Inclusivity: By allowing party members to vote, the selection process becomes more inclusive. Members feel a sense of ownership and engagement in the party's direction and representation.
- Transparency: A popular vote can enhance transparency within the party. It reduces the chances of backdoor deals or favoritism, as the selection process is open to scrutiny by the party members.
Other Methods of Candidate Selection
- Public Referendums: While this method involves the electorate, it is not commonly used for candidate selection within parties. Referendums are more suited for policy decisions.
- Appointment by Top Officials: Some parties may have a hierarchical structure where leaders appoint candidates. However, this can lead to discontent among members if they feel excluded from the decision-making process.
- Lottery Selection: This is an unconventional method and rarely used. It lacks the meritocratic aspect that popular voting provides, which is essential for representing the party's ideals.
In conclusion, option 'C' reflects the democratic nature of political parties, emphasizing member participation and representation in the electoral process.

What is the primary purpose of political parties in a democracy?
  • a)
    To promote individual interests
  • b)
    To divide and weaken society
  • c)
    To contest elections and hold power in the government
  • d)
    To create social and political divisions
Correct answer is option 'C'. Can you explain this answer?

Nk Classes answered
Political parties in a democracy primarily come together to contest elections and hold power in the government. They form to agree on policies and programs aimed at promoting the collective good of society. By doing so, they provide citizens with choices in governance and offer a platform for different ideologies and viewpoints. This process is fundamental to the functioning of a democratic system, where political parties play a crucial role in representing and advocating for various interests within society.

How have recent legislative changes in the country addressed the issue of defection in politics?
  • a)
    By increasing the rewards for party switching
  • b)
    By imposing stricter penalties for party switching
  • c)
    By legalizing party defection
  • d)
    By banning political parties altogether
Correct answer is option 'B'. Can you explain this answer?

Ritika Mishra answered
Overview of Legislative Changes on Defection
In recent years, many countries have faced challenges related to political defection, where elected officials switch parties, often leading to instability and undermining voter trust. Legislative changes have aimed to address this issue effectively.
Imposition of Stricter Penalties
- Purpose: The primary goal of imposing stricter penalties is to deter politicians from switching parties for personal gain, which can lead to a lack of accountability and trust in the political system.
- Types of Penalties: These penalties may include:
- Fines: Heavy financial penalties for politicians who defect without legitimate reasons.
- Disqualification: Legislators may face disqualification from holding public office for a certain period if found guilty of party switching.
- Impact: By raising the stakes, legislators aim to create a political environment where loyalty to one’s party and commitments to constituents are prioritized over opportunistic defection.
Countering Opportunism
- Strengthening Party Cohesion: Stricter penalties encourage party solidarity, thereby fostering a more stable political landscape.
- Enhancing Voter Trust: When voters see that there are consequences for party switching, they may feel more confident in their elected officials, knowing they are less likely to abandon their party for self-serving reasons.
Conclusion
In summary, recent legislative changes have effectively sought to address the issue of political defection by imposing stricter penalties. This approach aims to enhance accountability, strengthen party loyalty, and restore public trust in the political process.

What is the significance of political parties in a democracy ?
  • a)
    They are essential for organizing elections and selecting government officials.
  • b)
    They serve as a means to suppress opposing views and opinions.
  • c)
    They are necessary for bringing together representatives and supporting or restraining the government.
  • d)
    They solely exist to oppose government policies and decisions.
Correct answer is option 'C'. Can you explain this answer?

Significance of Political Parties in a Democracy
Political parties play a crucial role in the functioning of democratic systems. They serve multiple functions that are essential for the stability and efficacy of governance.
Representation and Inclusivity
- Political parties bring together individuals with similar interests and beliefs.
- They create a platform for diverse voices and perspectives within society, ensuring that various groups are represented in the political arena.
Supporting or Restraining the Government
- Parties are instrumental in forming the government, as they nominate candidates for elections and help voters make informed choices.
- Once in power, parties can support government initiatives or act as a check on the government, ensuring accountability and transparency in governance.
Policy Development and Debate
- Political parties engage in policy formulation and debate, providing insights into the needs and desires of their constituents.
- They facilitate discussions on important issues, helping to shape public policy and legislation that reflects the will of the people.
Political Stability
- By organizing political processes and fostering competition, parties contribute to political stability.
- They provide a structured way for citizens to express their political preferences, reducing the likelihood of unrest or radical movements.
Conclusion
In summary, political parties are essential in a democracy as they unite representatives, support or restrain governmental authority, and foster inclusive political discourse. Their multifaceted roles are vital to maintaining a healthy democratic environment where citizens can engage in governance actively.

Why is internal democracy within political parties considered a significant challenge in the functioning of democracy?
  • a)
    Lack of financial resources
  • b)
    Concentration of power in few leaders
  • c)
    Inefficient communication strategies
  • d)
    External interference in party affairs
Correct answer is option 'B'. Can you explain this answer?

Understanding Internal Democracy in Political Parties
Internal democracy refers to the processes and practices within political parties that allow for participation, decision-making, and representation of all members. A significant challenge in the functioning of democracy arises from the concentration of power in the hands of a few leaders.
Concentration of Power
- Limited Participation: When a small group of leaders holds decision-making authority, it often leads to exclusion of the broader membership. This can stifle diverse viewpoints and limit democratic engagement within the party.
- Lack of Accountability: Concentrated power can result in leaders becoming unaccountable to party members. Decisions may be made without sufficient scrutiny or debate, leading to policies that do not reflect the interests of the wider membership.
- Stifling Dissent: A few powerful leaders may suppress dissenting opinions or alternative viewpoints, which is contrary to the principles of democratic dialogue. This can create an environment where innovation and constructive criticism are discouraged.
Impact on Democracy
- Erosion of Democratic Values: When internal democracy is lacking, it can lead to a disconnection between political leaders and the electorate. This undermines the core tenets of democracy, as citizens feel their voices are not heard.
- Polarization and Conflict: Concentrated power can lead to factionalism within the party, resulting in conflicts that may spill over into the broader political landscape. This can further polarize political discourse.
In conclusion, the concentration of power in a select few leaders poses a significant challenge to internal democracy within political parties, ultimately affecting the health and functionality of democracy itself.

Why do political parties play a crucial role in modern democracies?
  • a)
    To create divisions in society
  • b)
    To ensure independent candidates win elections
  • c)
    To provide access to government machinery and welfare schemes
  • d)
    To discourage public participation
Correct answer is option 'C'. Can you explain this answer?

Political parties play a crucial role in modern democracies by providing people access to government machinery and welfare schemes implemented by governments. They act as intermediaries between the government and the citizens, making it easier for ordinary people to engage with the political system and have their needs addressed. This accessibility helps foster a sense of connection between the public and the governing bodies, even if full trust in political parties may not always exist.

How do opposition parties contribute to the political landscape in a democracy?
  • a)
    By controlling the government's decisions
  • b)
    By mobilizing support for the ruling party
  • c)
    By voicing different views and criticizing the government
  • d)
    By enforcing strict regulations
Correct answer is option 'C'. Can you explain this answer?

Opposition parties in a democracy play a vital role by voicing different views and criticizing the government for its failures or wrong policies. This function is essential for ensuring accountability and transparency within the government. By offering alternative perspectives and challenging the ruling party, opposition parties help maintain a healthy balance of power and encourage public debate on important issues.

What key concept underlies the foundation of the Bharatiya Janata Party (BJP)?
  • a)
    Promotion of socialism and democracy
  • b)
    Advocacy for secularism and minority rights
  • c)
    Emphasis on integral humanism and cultural nationalism
  • d)
    Support for free flow of foreign capital
Correct answer is option 'C'. Can you explain this answer?

Nk Classes answered
The Bharatiya Janata Party (BJP) was founded with the core principles of integral humanism and cultural nationalism. These ideologies form the bedrock of the party's vision, emphasizing a strong and modern India drawing inspiration from India's ancient culture and values, along with Deendayal Upadhyaya's ideas. Cultural nationalism, often referred to as 'Hindutva', plays a significant role in shaping the party's perception of Indian nationhood and politics. This ideological foundation has been central to the BJP's growth and influence in Indian politics.

What term is used to describe a system where several parties compete for power, with more than two parties having a reasonable chance of coming to power either on their own strength or in alliance with others?
  • a)
    Uniparty system
  • b)
    Multiparty system
  • c)
    Two-party system
  • d)
    Biparty system
Correct answer is option 'B'. Can you explain this answer?

In a multiparty system, several parties compete for power, with more than two parties having a reasonable chance of coming to power either on their own strength or in alliance with others. This system allows for a variety of interests and opinions to enjoy political representation, although it can lead to political instability.

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