NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1392 - 1398 of 2000

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Question number: 1392

» Physics » Sound

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1393

» Chemistry » Atoms & Molecules

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Question

What is the mass of one atom of silver?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1394

» Physics » Gravitation & Pressure

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Question

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

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1395

» Physics » Gravitation & Pressure

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Question

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

Question number: 1396

» Physics » Work, Energy & Power

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Question

A stationary particle explodes into two particles of masses and which move in opposite directions with velocities and . The ratio of their kinetic energy is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1397

» Physics » Motion

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Question

An object freely fall from height reaches the ground in time . What is the height at time ?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1398

» Physics » Sound

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MCQ▾

Question

Where air pressure is higher, which type of pulses formed?

Choices

Choice (4)Response

a.

Transverse

b.

Rarefaction

c.

Compression

d.

Question does not provide sufficient data or is vague

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