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Learn UPSC MCQs with answers [Page 1 of Department 68]

C

Chandani • 9.65K Points
Tutor III 

1) What kind of energy is stored in the spring of a watch?

(A) Kinetic
(B) Potential
(C) Heat
(D) Chemical
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Correct Answer - Option (B)

Explanation :
Potential energy is stored in the spring of a watch. Potential energy is the energy by virtue of an object’s position relative to other objects. It is often associated with restoring forces such as a spring or the force of gravity.

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C

Chandani • 9.65K Points
Tutor III 

2) What happens to the orbital velocity of a satellite when the radius of orbit is increased?

(A) it decreases
(B) it increases
(C) it remains same
(D) None of the above
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Correct Answer - Option (A)

Explanation :
The orbital velocity of a satellite decreases when the radius of orbit is increased or height of the satellite is increased.

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C

Chandani • 9.65K Points
Tutor III 

3) The angular momentum of a satellite depends on which of the following?

(A) Mass of the satellite
(B) Mass of the planet
(C) Radius of orbit of satellite
(D) All of the above
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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C

Chandani • 9.65K Points
Tutor III 

4) Which of the following is an essential condition for geostationary satellites of earth?

(A) It should rotate from west to east
(B) Its period of revolution should be 24 hours
(C) It should be at a height of nearly 36000 km above the equator
(D) All of the above
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Correct Answer - Option (D)

Explanation :
Essential condition for geostationary satellites of earth: Its sense of rotation should be the same as that of earth i.e. it should rotate from west to east. It should be at a height of nearly 36000 km above the equator. Its period of revolution should be 24 hours. it should revolve in an orbit concentric and coplanar with the equatorial plane. Its orbital velocity is nearly 3.1 km/s

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C

Chandani • 9.65K Points
Tutor III 

5) By how much times the orbital speed of a satellite needs to be increased to make it escape the gravitational field?

(A) √3 times
(B) 4 times
(C) 2 times
(D) √2 times
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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C

Chandani • 9.65K Points
Tutor III 

6) Which of the following relations between Kinetic energy and Potential energy is true about solids?

(A) Kinetic energy = Potential energy
(B) Kinetic energy > Potential energy
(C) Kinetic energy >> Potential energy
(D) Kinetic energy < Potential energy
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Correct Answer - Option (D)

Explanation :
In Solids, Kinetic energy is always less than the Potential energy. For liquids, Kinetic energy > Potential energy. For Gases, Kinetic energy >> Potential energy.

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C

Chandani • 9.65K Points
Tutor III 

7) Which of the following statements represent Hooke’s law?

(A) Stress is directly proportional to strain
(B) Stress is inversely proportional to strain
(C) Stress is equal to strain
(D) None of the above
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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C

Chandani • 9.65K Points
Tutor III 

8) What is the order of distance for interatomic forces to be active?

(A) 10^–7 metre
(B) 10^–8 metre
(C) 10^–9 metre
(D) 10^–10 metre
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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C

Chandani • 9.65K Points
Tutor III 

9) Which of the following is the correct equivalent of 1 atmosphere?

(A) 1 atmosphere = 1.013 × 10^5Pa
(B) 1 atmosphere = 1.013 × 10^4Pa
(C) 1 atmosphere = 1.013 × 10^3Pa
(D) 1 atmosphere = 1.013 × 10^2Pa
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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T

Tina Singh • 10.78K Points
Tutor II 

10) The minimum number of judges to sit on the Constitutional Bench or on Bench which gives its advisory opinion on the reference by the President must be:

(A) One-third of the total strength of the court
(B) Three
(C) One half of the total strength of the Supreme Court
(D) Seven
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Correct Answer - Option (C)

Explanation :
Court’s advisory jurisdiction may be sought by the President under Article 143 of the Constitution. This procedure is termed as “Presidential Reference” and is recognized as the ‘Advisory jurisdiction’ of the Court. The minimum number of judges to sit on the Constitutional Bench or on Bench which gives its advisory opinion on the reference by the President must be one-half of the total strength of the Supreme Court.

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You are learning MCQ Questions of UPSC Department : 68 | Page : 1

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