Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 6 - 11 of 285

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Question number: 6

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Question

MCQ▾

A metal block of mass is suspended from the ceiling of room through a chain of mass . The ceiling pulls the chain by a force of:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 7

Physics
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Question

MCQ▾

Two blocks of different masses and are dropped from two different heights and respectively. The ratio of the time taken to reach the ground is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 8

Physics
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Question

MCQ▾

A bus covers first half distance between two station at a speed of and remaining half distance between two station at speed of . The average speed of the bus is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 9

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Question

MCQ▾

The work done by a student in lifting a block from the ground and keeping it on a shelf of height is:

Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

Question number: 10

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Question

MCQ▾

A ball is projected vertically upward with a kinetic energy . If it goes up to a maximum height of , then the mass of the ball is approximately:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 11

Physics
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Question

MCQ▾

The density of air is maximum at an instant, through which a sound wave is passing. The pressure at that point at same instant is:

Choices

Choice (4)Response

a.

Equal to atmospheric pressure

b.

Minimum

c.

Maximum

d.

Same as the density