Quiz on Physics Set 43

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Quiz on Physics Set 43 :

Question 1 : 

A bimetal made copper and iron strips welded together is straight at room temperature. It is held vertically with iron strip towards left and copper strip towards right. If this bimetal is heated, it will
A. Remain straight
B. Bend towards right
C. Bend towards left
D. None of these

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Correct Ans: Option C

Question 2 : 

Thermal expansion of materials arises from
A. Strong bonds
B. Thermal vibrations
C. Weak bonds
D. Asymmetry of potential energy curve

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Correct Ans: Option D

Question 3 : 

What should be the angle between force and displacement for maximum work to be done?
A. 0°
B. 90°
C. 180°
D. 30°

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Correct Ans: Option A

Question 4 : 

What happens to the velocity of a heavy body when it undergoes an elastic collision in one dimension with a very light body at rest?
A. it stops and comes to rest
B. it keeps on moving with the same velocity
C. it starts moving with half of its initial velocity
D. it rebounds with the same velocity

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Correct Ans: Option B

Question 5 : 

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 Ans: Option B

Question 6 : 

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 Ans: Option A

Question 7 : 

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 Ans: Option D

Question 8 : 

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 Ans: Option D

Question 9 : 

What will happen to a ball if it is dropped from a spacecraft revolving around the earth at a height of 120 km?
A. It will go very far in the space
B. It will fall down to the earth gradually
C. If will move with the same speed tangentially to the spacecraft
D. It will continue to move with velocity v along the original orbit of spacecraft

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Correct Ans: Option D

Question 10 : 

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 Ans: Option D

Quiz Summary

Here the correct answers of every question in this quiz.

Q.1 [C],     Q.2 [D],     Q.3 [A],     Q.4 [B],     Q.5 [B],     Q.6 [A],     Q.7 [D],     Q.8 [D],     Q.9 [D],     Q.10 [D],    


Total Questions: 10
Your score:
Subject: Physics
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