Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 51 - 56 of 219

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Question number: 51

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Question

MCQ▾

The atmospheric pressure is measured by:

Choices

Choice (4)Response

a.

Thermometer

b.

Anemometer

c.

Barometer

d.

All of the above

Question number: 52

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Question

MCQ▾

Friction force is decreased by:

Choices

Choice (4)Response

a.

Using oil on the surface of contact

b.

Making surface smooth

c.

Decrease the weight of body

d.

All a. , b. and c. are correct

Question number: 53

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Question

MCQ▾

If the height of the water surface above the bottom of given vessels is same, then in which of the following vessel, the pressure of the water on the bottom of vessel is greatest?

Four vessels containing water

Four Vessels Containing Water

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Choices

Choice (4)Response

a.

Vessel – 2

b.

Same pressure at bottom for all vessels.

c.

Vessel – 3

d.

Vessel – 4

Question number: 54

Physics
Edit

Question

MCQ▾

An object is travelling with speed of sound. Therefore, value of its speed is around:

Choices

Choice (4)Response

a.

b.

c.

d.

All a. , b. and c. are correct

Question number: 55

Physics
Edit

Question

MCQ▾

Sound cannot propagate through:

Choices

Choice (4)Response

a.

Gas

b.

Solid

c.

Water

d.

Vacuum

Question number: 56

Physics
Edit

Question

MCQ▾

Due to which property (ies), a human can identified the quality of sound produced by a source?

Choices

Choice (4)Response

a.

Loudness

b.

Frequency

c.

Amplitude

d.

All a. , b. and c. are correct