Bihar PGT Physics Mock Test - 5 - Bihar PGT/TGT/PRT MCQ

The correct form of the word would be 'likes'. This is because the subject of the sentence is singular. 

'Chivalry' is the quality in a man of being highly courteous in his presentation. None of the other options means the same as that of the given phrase.
A preacher is a religious teacher, a savior is a person who protects people in times of need and a knight is a great warrior.
Example-Chivalrous men are difficult to be found in today's world.

The sentence shows a prediction that India will hold talks with Afghanistan in the future on militancy. It depicts a simple future form in nature. Thus, as it is already in the said simple future tense, no further improvement is required.
Hence option 4 is correct.

The correct option is 1.
The sentence is a question and therefore, must begin with an interrogative tone. The phrase ‘You have been doing’ should be rewritten as ‘Have you been doing’ for the sentence to form a proper question. Hence, the error lies in the first phrase. 

समास - दो या दो से अधिक शब्दों से मिलकर जो नया और छोटा शब्द बनता है उस शब्द को हिन्दी में समास कहते हैं।

युद्धभूमि शब्द का समास विग्रह - युद्ध के लिए भूमि (सम्प्रदान तत्पुरुष समास)

तत्पुरुष समास - वह समास है जिसमें बाद का अथवा उत्तर पद प्रधान होता है तथा दोनों पदों के बीच का कारक-चिह्न लुप्त हो जाता है। वह समास है जिसमें बाद का अथवा उत्तर पद प्रधान होता है तथा दोनों पदों के बीच का कारक-चिह्न लुप्त हो जाता है। 

विभक्तियों के नामों के अनुसार तत्पुरुष समास के छः भेद हैं-

कर्म तत्पुरुष - को 

करण तत्पुरुष - से और के द्वारा 

सम्प्रदान तत्पुरुष - के लिए और को 

अपादान तत्पुरुष - से 

सम्बन्ध तत्पुरुष - का, के, की

अधिकरण तत्पुरुष - में पर और पर

अत: विकल्प (B) सही है I

नाविक शब्द में अयादि संधि है, अन्य विकल्पों में यण संधि है। 

संधि - संधि (सम् + धि) शब्द का अर्थ है 'मेल' या जोड़। दो निकटवर्ती वर्णों के परस्पर मेल से जो विकार (परिवर्तन) होता है वह संधि कहलाता है। 

नाविक = नौ + इक (अयादि संधि) 

नियम - औ + इ = आव् + इ 

अयादि संधि - ए, ऐ और ओ औ से परे किसी भी स्वर के होने पर क्रमशः अय् आय्, अव् और आव् हो जाता है। इसे अयादि संधि कहते हैं। 

अन्य विकल्प -

स्वागत = सु + आगत (उ +आ = व् +आ)

अन्वेषण =अनु + एषण (उ ए व् ए)

देव्यागमन = देवी + आगमन ( ई + आ = य् + आ) यण संधि - इ, ई के आगे कोई विजातीय (असमान) स्वर होने पर इ, ई को 'य्' हो जाता है। उ, ऊ के आगे किसी विजातीय स्वर के आने पर उ, ऊ को 'व्' हो जाता है। 'ऋ' के आगे किसी विजातीय स्वर के आने पर ऋ को 'र्' हो जाता है। इन्हें यण-संधि कहते हैं।

अत: विकल्प (C) सही है I

वर्ण - हिन्दी भाषा में प्रयुक्त सबसे छोटी इकाई वर्ण कहलाती है।

य वर्ण का उच्चारण स्थान – तालु है।

तालु से उच्चारित वर्ण - इ,च,छ,ज,झ, ञ , य,श

अत: विकल्प (A) सही है I

पद्मावत में सात चौपाई के बाद एक दोहा देने की परंपरा है। अतः उपर्युक्त विकल्पों में से विकल्प दो पद्मावत सही है तथा अन्य विकल्प असंगत है। चित्रावली में भी सात चोपाई के बाद एक दोहा देने की परंपरा है। मृगावती, सत्यवती कथा ,चंदायन, आलम कृत माधवानल में भी पांच चौपाई के बाद एक दोहा देने की परंपरा है। पद्मावत मलिक मोहम्मद जायसी की रचना है।। इनका प्रिय अलंकार उत्प्रेक्षा अलंकार है। पद्मावत का रचना वर्ष 1540 ईस्वी है। पद्मावत की रचना अवधी भाषा में की गई है। यह चौपाई दोहा छंद में है। चीपाई की प्रत्येक सात अर्धालियों के बाद दोहा आता है और इस प्रकार आए हुए दोहों की संख्या 653 है। पद्मावत में उपसंहार समेत 58 अध्याय हैं। पद्मावत का "नागमती वियोग खंड" हिंदी साहित्य की अनुपम निधि है।

केशव अलंकार सम्प्रदायवादी आचार्य कवि थे। इसलिये स्वाभाविक था कि वे भामह, उद्भट और दंडी आदि अलंकार सम्प्रदाय के आचार्यों का अनुसरण करते। इन्होंने अलंकारों के दो भेद माने हैं, साधारण और विशिष्ट। साधारण के अन्तर्गत वर्णन, वर्ण्य, भूमिश्री-वर्णन और राज्यश्री-वर्णन आते है जो काव्यकल्पलतावृत्ति और अलंकारशेखर पर आधारित हैं।

अत: विकल्प (C) सही है I

चन्द्रधर शर्मा गुलेरी और धीरेन्द्र वर्मा ने हिन्दी साहित्य के आदिकाल को अपभ्रंश काल की संज्ञा दी है,आदिकाल के साहित्य में अपभ्रंश भाषा की प्रधानता स्वीकारते हुए उन्होंने इस काल को अपभ्रंश काल कहना अधिक समीचीन समझा है।

अत: विकल्प (D) सही है I

अघोष और घोष वर्ण :-

घोष:- जिन वर्णों के उच्चारण में, स्वर तंत्रियों में ध्वनि का कम्पन हो, इनकी संख्या 31 होती है।

अघोष वर्ण:- स्वर तंत्रियो में ध्वनि का कम्पन न हो, इनकी संख्या 13 होती है।

अत: विकल्प (D) सही है I

The correct answer is citric.

• Orange juice contains citric acid due to which tastes sour.

Key Points

• Fruits that contain citric acid are called citrus fruits.
• Citrus fruits are lemon, lime, orange, Grapefruit, etc.
• The formula of citric acid is C₆H₈O₇.

Additional Information

• Oxalic acid is found in tomato.
  • Its formula is C₂H₂O₄.
• Formic acid is found in the sting of ants and bees.
  • Its formula is CH₂O₂.
• Acetic acid is found in vinegar.
  • Its formula is id CH₃COOH.

Concept:

Matter

• The thing which occupies space is called matter.
• Matter is made up of particles and based on the arrangement of particles matter has been classified into different states.
• The matter has 5 states, Solid, liquid, glass, Plasma, and Bose - Einestine condensate.
• Solid, Liquid, and Gas are states of matter that we observe across our surroundings.
• The following table defines these three states.

The arrangement of particles in solid, liquid, and gas is shown in this diagram.

Explanation:

• The state of matter with a definite volume but no definite shape is liquid.
• The liquid gets itself in the shape of its container. This can be easily observed.
  • If we keep liquid in the jug it will be according to its shape.
  • The shape will change if the same liquid is poured into a glass.
• Though the volume of the liquid does not change. It will remain the same.

Therefore the correct option is liquid.

Key Points

Thus, the correct match is A (III), B (II), C (IV), D (I)

In the question,

11² = 121

13² = 169

17² = 289

19² = 361

23² = 529

24² = 576

Thus we can say except for (24)² , all the given number is a square of a prime number.

Hence, Option (2) is correct.

The right to equality provides for the equal treatment of everyone before the law, prevents discrimination on various grounds, treats everybody as equals in matters of public employment, and abolishes untouchability, and titles (such as Sir, Rai Bahadur, etc.).

Important Points

Abolition of Untouchability:

• Article 17 abolishes ‘untouchability’ and forbids its practise in any form. The enforcement of any disability arising out of untouchability shall be an offence punishable in accordance with the law.
• A person convicted of the offence of ‘untouchability’ is disqualified for election to the Parliament or state legislature. The acts of offences include:
  • Preaching untouchability directly or indirectly.
  • Preventing any person from entering any shop, hotel, public place of worship and place of public entertainment.
  • Refusing to admit persons in hospitals, educational institutions or hostels established for public benefit.
  • Justifying untouchability on traditional, religious, philosophical or other grounds.
  • Insulting a person belonging to a scheduled caste on the ground of untouchability.

Thus, we can conclude that the practice of untouchability stands abolished and Its practice in any form is punishable by law.

Hence, the applicant meets all the criteria.

Treaty of Versailles

• On June 28, 1919, the Treaty of Versailles was signed at the Palace of Versailles outside Paris, France. The treaty was one of several that officially ended five years of conflict known as the Great War—World War I.
• The Treaty of Versailles outlined the conditions of peace between Germany and the victorious Allies, led by the United States, France, and the United Kingdom. Other Central Powers (significantly, Austria-Hungary) signed different treaties with the Allies.
• The Treaty of Versailles is one of the most controversial armistice treaties in history. The treaty’s so-called “war guilt” clause forced Germany and other Central Powers to take all the blame for World War I. This meant a loss of territories, reduction in military forces, and reparation payments to Allied powers.

• The Treaty of Versailles held Germany responsible for starting the war and imposed harsh penalties in terms of loss of territory, massive reparations payments and demilitarization. Far from the “peace without victory” that U.S. President Woodrow Wilson had outlined in his famous Fourteen Points in early 1918, the Treaty of Versailles humiliated Germany while failing to resolve the underlying issues that had led to war in the first place.

• Economic distress and resentment of the treaty within Germany helped fuel the ultra-nationalist sentiment that led to the rise of Adolf Hitler and his Nazi Party, as well as the coming of World War II just two decades later.

Key Points

The Fourteen Points  

1. Diplomacy should be public, with no secret treaties.
2. All nations should enjoy free navigation of the seas.
3. Free trade should exist among all nations, putting an end to economic barriers between countries.
4. All countries should reduce arms in the name of public safety.
5. Fair and impartial rulings in colonial claims.
6. Restore Russian territories and freedom.
7. Belgium should be restored to independence.
8. Alsace-Lorraine should be returned to France and France should be fully liberated.
9. Italy’s frontiers should be drawn along clearly recognizable lines of nationality.
10. People living in Austria-Hungary should be granted self-determination.
11. The Balkan states should also be guaranteed self-determination and independence.
12. Turks and those under Turkish rule should be granted self-determination.
13. An independent Poland should be created.
14. A general association of nations must be formed to mediate international disputes.

We know, the gravitational force  
 

This is valid when R is the centre to centre distance between the two masses M and m.

At a distance r < R, the mass of Earth cannot be taken as M.

The new mass (M'):

The mass of earth will be contained for a radius r. Let us assume that the mean density of the earth is ρ and that earth is a sphere with a radius equal to the distance r. We know, mass = density × volume

Therefore the gravitational force, 

Hence the gravitational force, F ∝ r

Explanation:Parallelogram law of vector addition is,If two vectors are considered to be the adjacent sides of a Parallelogram, then the resultant of two vectors is given by the vector which is a diagonal passing through the point of contact of two vectors.

Coulombs law states the force between two charged particles is directly proportional to the product of charges and inversely proportional to the square of distance between them.
So if the distance is doubled then the force would decrease 4 times.
So the new force would be 120/4=30 Newton.

Let mass of the block be m.

Frictional force in rest position F = mg sin 30⁰

[This is static frictional force and may be less than the limiting frictional force]

From the definition, the work done to a test charge ‘q0’ from one place to another place in an electric field is given by the formula
W=q₀x[v_final-v_initial ]
100=4x[v-(-5)]
v+5=25
v=20V
 

Kinematic equations of rotational motion about a fixed axis,

where ω is the instantaneous angular velocity, α is the instantaneous angular acceleration, θ is the angular displacement, and t is time.

EXPLANATION:

Given: Length of the rod = L, and angular displacement θ = 2t²

• Using the first equation,

• Using the second equation, 

Therefore option 4 is correct.

Using formula for acceleration due to gravity,

When the radius is increased to five times,

Here mass of the earth is,

In order to maintain the same value for acceleration due to gravity:
g=g′

Force due to electric field will make the charged particle released from rest to move in the straight line (that of electric field). Since the force due to magnetic field is zero, therefore, the charged particle will move in a straight line.

Light remains confined within the core of simple optical fibre because of Total internal reflection from core cladding boundary.
Light is confined within the core of a simple optical fiber by. If light hits a boundary of a material of lower refractive index at a steep enough angle, it cannot get out and it's reflected back into the high index medium, as in the figure below.
An optical fibre is a thin rod of high-quality glass. Very little light is absorbed by the glass.Optical fibres can carry more information than an ordinary cable of the same thickness. The signals in optical fibres do not weaken as much over long distances as the signals in ordinary cables.
Total internal reflection. When light traveling in an optically dense medium hits a boundary at a steep angle (larger than the critical angle for the boundary), the light is completely reflected. This effect is used in optical fibers to confine light in the core.
The light in a fiber-optic cable travels through the core (hallway) by constantly bouncing from the cladding (mirror-lined walls), a principle called total internal reflection. Because the cladding does not absorb any light from the core, the light wave can travel great distances.
 

BC and AC are in series

Now BA and DC are in parallel.