Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 63 - 68 of 285

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Question 63

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Question

MCQ▾

If the momentum of a particle is and kinetic energy is . Then the velocity of the particle is:

Choices

Choice (4)Response

a.

b.

2

c.

d.

1

Question 64

Physics
Edit

Question

MCQ▾

A car accelerates from to in on straight road. The distance it covers in this period is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 65

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Question

MCQ▾

The mass of the Jupiter is and that of the Earth is . The distance between the Jupiter and Earth is . The gravitational force between the Jupiter and Earth is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question 66

Physics
Edit

Question

MCQ▾

On which factor intensity of sound depends?

Choices

Choice (4)Response

a.

Amplitude of vibration

b.

Density of the medium

c.

Surface area of the vibrating source

d.

All a. , b. and c. are correct

Question 67

Physics
Edit

Question

MCQ▾

If a particle is having linear uniform accelerating motion, then it’s graph of the speed vs time is like –

Choices

Choice (4)Response

a.

Graph of Speed vs Time : Choice A
Loading Image

b.

Graph of Speed vs Time : Choice B
Loading Image

c.

Graph of Speed vs Time : Choice C
Loading Image

d.

Graph of Speed vs Time : Choice D
Loading Image

Question 68

Edit

Question

MCQ▾

When a sphere is partly immersed in a liquid, it seem to be the less weight than its original one. Due to:

Choices

Choice (4)Response

a.

A down-thrust

b.

An up-thrust

c.

Upward or downward thrust depending on the density of the sphere

d.

Upward or downward thrust depending on the density of the liquid