Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 106 - 113 of 285

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Question 106

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Question

MCQ▾

If two particles of masses and are moving with equal kinetic energies, then the ratio of their linear momenta is:

Choices

Choice (4)Response

a.

b.

3

c.

d.

9

Question 107

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Question

MCQ▾

If velocity of body is increase from to in due to force acting on body, then the mass of the body is:

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Choice (4)Response

a.

b.

c.

d.

Question 108

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Question

MCQ▾

A ball is dropped from a height and rebounds to height of . The loss of energy is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question 109

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Question

MCQ▾

If a motor pumps out water from a well , then the quantity of water pumped out per second is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question 110

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Question

MCQ▾

A car of mass travelling hits a concrete wall and comes to a stop in . The magnitude of average force acting on the car to stop by wall:

Choices

Choice (4)Response

a.

b.

c.

d.

Question 111

Physics
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Question

MCQ▾

The length of the pendulum for which the time period is 1.2 second is:

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Choice (4)Response

a.

b.

c.

d.

Question 112

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Question

MCQ▾

If that is on the earth is , then the weight of a body on moon is about:

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Choice (4)Response

a.

b.

c.

d.

Question 113

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Question

MCQ▾

An astronaut on a planet measures the acceleration due to gravity to be . He knows that the radius of this planet is about times that of the earth. The ratio of the mass of earth to mass of this planet is:

(The acceleration due to gravity on the earth’s surface is )

Choices

Choice (4)Response

a.

85

b.

100

c.

60

d.

72