EMRS PGT Physics Mock Test - 3 - EMRS MCQ

Given number: 

5934162

New number after digits are arranged in descending order:

9654321

Thus we can see only position of one digit is remain unchanged.

Hence, the correct answer is "One".

Given Statement: P < Q < R < S = T

Conclusion:

I. Q < T → True (As, Q < R < S = T → Thus, it is clear that Q < T. So, the conclusion is true)

II. P > S → False (As, P < Q < R < S → Thus, it is clear that P < S. So, the conclusion is false)

III. R = T → False (As, R < S = T → Thus, it is clear that R < T. So, the conclusion is false)

Hence, the correct answer is "Only conclusion I follows".

The total distance = 15 + 20 + 30 + 15 = 80m

Hence, the correct answer is 80m.

ICT in Research:

• Researchers mainly use ICT tools for its ability to ease the knowledge-gathering process and to enhance resource development.

Generally, ICT tools help researchers in the following research-related tasks:

• identify appropriate information sources
• critically analyze information
• research effectively
• manage information
• use the information to extend and communicate knowledge across subject fields
• search up to ten databases and electronic resources simultaneously
• receive results in a common format
• link to individual databases for more specialized searching
• Communicate findings
• select favourite resources and e-journals, save searches and records, and set up email alerts.

Additional Information

• Information and Communication Technology (ICT) refers to technologies that provide access to information through telecommunications.
• ICT is an important tool in research as it speeds up research work.
• It helps to increase knowledge contribution within the research community.

Thus, it can be concluded that option 2 is the correct answer.

The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. 

Key Point

The advantage of the internet to a teacher:

1. Access to more information: the internet is a repository of information. A teacher can explore knowledge through using this facility
2. Update knowledge: For a teacher, it is more desirable to deliver updated knowledge. Internet is the only source to get fresh and updated information at a faster rate.
3. Bridge the communication gaps: the internet helps to overcome communication in the classroom and also outside the class
4. Convenience and flexibility: they can adopt different teaching-learning styles and reduce suffering from test anxiety or have difficulty concentrating in a busy classroom.

Important Points

The other advantages of the internet in education are:

• Provide education in remote areas
• Widen the area of knowledge
• Provide a cost-friendly system
• Facilitate more than one course through ODL
• Increase the interest of students in higher education
• Provide free and easily accessible study materials, etc.

Therefore, the advantage of the internet to a teacher is he can update his knowledge and enrich it.

Questions take learning forward by interactions and lead to conceptual clarity. Thus, students should be encouraged to ask the questions. Question-asking puts advanced cognitive demand on students. It encourages students to think beyond literal questions.

Animals solve problems by understanding – like human beings, instead of going through either the trial and error process or stimulus response association. In this case, learning took place by insight. Learning by insight involves finding a solution to the problem by thinking over the problem and understanding the various aspects of the problematic situation.
Insight learning refers to the sudden realisation of the solution of any problem without repeated trials or continuous practices. To further elaborate on its definition, insight learning is the type of learning in which one draws on previous experience and also seems to involve a new way of perceiving logical and cause-and-effect relationship.

Alcohol and HCl are polar molecules since they have a net dipole moment towards a particular direction. Both water and benzene are non-polar molecules. But water is a conductor of electricity, whereas benzene is a dielectric (insulator).

Gravitational force between two objects is mathematically represented as:
F = G × (m₁×m₂) / r²
Applying the Law of Gravitation,
Given that the initial force F is due to two objects each of mass m separated by a distance r.
Substituting these into the formula gives:
F = G × (m×m) / r²
The problem then states that the mass of each of the objects is doubled (to 2m) and the distance between them is also doubled (to 2r).
The new force F' using these values in the formula would be: F' = G × (2m×2m) / (2r)²

Simplifying this gives:
F' = 4G × (m×m) / 4×r²
This simplifies further to:
F' = G × (m×m) / r²
Comparing this with the original equation for F, we find that:
F' = F

A body start from rest so, u = 0 
Let total distance covered = s
Let a body moves with accerlation = a 
s = 1/2 × a× t²
s = 1/2× a × 4²
s = 8a
The one-fourth of total distance, s'  = 8a/4
= 2a
s' = 1/2 × a × t²
2a / a = 1/2 × t²
4 = t²
t = 2 seconds

The child should hold the umbrella in the direction at which the rain appears to fall on him, which is the direction of relative speed of rain with respect to the  child.

Concept 

Newton's law of gravitation states "Every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres."

Explanation 

Newton's law of gravitation can be represented mathematically as: F = G x (m₁ x m₂/ r²)

Where:

• F is the force of attraction between the two bodies.
• m₁ and m₂ are the masses of the two bodies.
• r is the distance between the centres of the two bodies.
• G is the gravitational constant, a proportional constant that in the SI system is approximately 6.674 x10^-11N(m/kg)².
• So, if you have two bodies with masses m1 and m2, and they are separated by a distance r, then the force of gravity between them is directly proportional to the product of their masses and inversely proportional to the square of the distance between them,
• Real-world applications of this law include everything from explaining the motion of planets in our solar system to the rolling of a ball down a hill. It's one of the cornerstones of classical physics and is essential in understanding the larger structure of the universe.

Infrared waves are emitted by hot bodies. They are produced due to the de-excitation of atoms.
They are called Heat waves as they produce heat falling on matter. This is because water molecules present in most materials readily absorb infrared waves. After absorption, their thermal motion increases, that is, they heat up and heat their surroundings.
Uses: Infra red lamps; play an important role in maintaining warmth through greenhouse effect.

Kinetic energy at highest point,

Force due to surface tension acts all along the circumference of the circular plate. Therefore, force required to take away of plate is,
F = T x 2πr = 70 x 2 x 3.14 x 4 = 1758.4 dyne/cm
 

 So the range is 88 - 198 pF

3. 1.5

Solution: Let the radius of curvature of the convex surface of the plano-convex lens be RRR. The focal length of a concave mirror is related to the radius of curvature by f=R2f = \frac{R}{2}f=2R​.

1. When the plane side is silvered, the system behaves as a concave mirror with focal length 30 cm. The effective focal length fefff_{\text{eff}}feff​ of this system can be found using the mirror formula and lens formula combined, but given the scenario, we focus on this system.

2. When the convex side is silvered, the system behaves like a concave mirror with focal length 10 cm.

By using the relations for combined focal length and refractive index of the plano-convex lens, and applying these boundary conditions, the refractive index nnn of the material of the lens is determined to be 1.5.

Let, the length of wire = l unit

Fraction required =a

Then, the lenght of wire which is stretched =al

As we know that the stopping potential of the photoelectron is equal to the maximum kinetic energy of the photoelectron,
KEmax​=10.4V
Now, in photoelectric effect,
Energy of incident radiation (E_in​) = work function + K.Emax​
⇒ E_in​=1.7+10.4
⇒ E_in​=12.1eV
Now, for 0 hydrogen atom,
Energy of first energy level, E₁​=−13.6eV
Energy of second energy level, E₂​=−3.4eV
Energy of third energy level, E₃​=−1.5eV
Hence, a transition from third to first energy level will result in emission of radiation of energy = E₃​−E₁​=12.1eV which is same as the energy of incident radiation of above photoelectric effect.
Thus, correct answer is n=3 to 1
 

Using formula for Paschen series,
1/λ=R[(1/3²)-1/n₂²],n₂=4,5,6….
For shortest wavelength, n₂=∞
∴1/λ=R[(1/3²)-1/∞²],n₂=R/9 or λ=9/R ≈ 820.4 nm

The magnetic moment of a current carrying loop is given by

the direction is towards positive z-axis.

In the triarchic theory, three types of intelligence proposed by Robert Sternberg are: Analytical, Creative and Practical.

Indian education structure and management were guided by New Education Policy, of 1986 for a long time (almost 34 years). In the meantime, a lot of changes have taken place globally as well as a debate has also emerged in India about a ‘Bharat-centric’ policy on education.

• In order to look into those, a new committee was set up under the chairmanship of Dr. K. Kasturirangan in June 2017. After reviewing the suggestions, the committee finalized the policy under the name National Education Policy, 2020 on July 29, 2020. 

Key Points

Major recommendations of the policy were -

• The aim of equity and inclusion is now at the heart of the new NEP so the classroom should be inclusive.
• Ensuring universal access at all levels of schooling from pre-primary school to Grade 12.
• Ensuring quality early childhood care and education for all children between 3-6 years.
• New Curricular and Pedagogical Structure (5+3+3+4)including foundational, preparatory, middle, and secondary.
• Establishing National Mission on Foundational Literacy and Numeracy.
• Emphasis on promoting multilingualism and Indian languages. 
• Exposure to vocational education in school and higher education system.
• Focus on Formative and Diagnostic Assessment.
• Setting up multidisciplinary education and research universities(MERUs).
• Setting up of National Research Foundation(NRF).
• Multidisciplinary approach and focus on creative and divergent thinking.
• Experiential learning using previous knowledge and experiences.
• Teacher Education - 4-year integrated stage-specific, subject-specific Bachelor of Education.

Hence, it is concluded that all the above options are correct.

'A house divided against itself cannot stand' means if there is no unity within an organization or group nothing can be achieved.

Option 3 states this meaning and is the correct option. All other options imply other ideas.

Example- The management never made peace with the players, hence there was complete chaos, and the team eventually lost. Truly a house divided against itself cannot stand in the long run.

The options don't have a simple past tense alternative. The sentence seems to state that the team had arrived a day prior to the day of this conversation. The sentence goes absolutely fine in the past perfect tense as the presence of the word 'yesterday' shows that an activity has been completed in the past. 

The sentence indicates the contraction of skeletal muscles. Rhythmic contraction would mean a strong, regular pattern of movement or sound, while nonmetrical, arrhythmic, and unrhythmic mean the opposite.
In the above sentence, Rhythmic contraction suits the meaning of the sentence. Thus, option 4 is the correct answer.

The sentence is grammatically correct.
Hence, there is no error in the given sentence.

सही उत्तर धर्मार्थ है।

Key Points

• धर्म + अर्थ= धर्मार्थ
• नियम- अ + अ= आ
• धर्मार्थ में "दीर्घ स्वर संधि" है।
• धर्मार्थ शब्द का अर्थ- धर्म हेतु किया गया।
• उदाहरण- सेठजी कोई भी काम धर्मार्थ करते हैं।

Additional Informationसंधि - दो शब्दों के मेल से जो विकार (परिवर्तन) होता है उसे संधि कहतेहैं।
संधि के तीन प्रकार हैं - 1. स्वर, 2. व्यंजन और 3. विसर्ग