Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 58 - 65 of 219

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Question number: 58

» Physics » Force and Pressure

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MCQ▾

Question

Which of the following force is contact force?

Choices

Choice (4)Response

a.

Magnetic force

b.

Electrostatic force

c.

Friction force

d.

Gravitational force

Question number: 59

» Physics » Sound

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MCQ▾

Question

The speed of sound in kerosene, aluminum and air can correctly compared as:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 60

» Physics » Sound

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MCQ▾

Question

Choices

Choice (4)Response

a.

oscillation per

b.

oscillation in

c.

oscillation per

d.

oscillation per

Question number: 61

» Physics » Force and Pressure

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MCQ▾

Question

A force is distributed uniformly on one surface of a cube of edge . The pressure on this surface is:

A force applied on a cube

A Force Applied on a Cube

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 62

» Physics » Force and Pressure

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MCQ▾

Question

Which of the following is non – contact force?

Choices

Choice (4)Response

a.

Elastic spring force

b.

Muscular force

c.

Friction force

d.

Electrostatic force

Question number: 63

» Physics » Light

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MCQ▾

Question

Which of the following mirrors are used in periscopes?

Choices

Choice (4)Response

a.

Plane mirrors

b.

Plano – convex mirrors

c.

Convex mirrors

d.

Concave mirrors

Question number: 64

» Physics » Chemical Effects of Electric Current

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MCQ▾

Question

Which of the following metal is not extracted by electrolysis?

Choices

Choice (4)Response

a.

Sodium

b.

Potassium

c.

Iron

d.

Aluminum

Question number: 65

» Physics » Light

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MCQ▾

Question

When two plane mirrors are placed perpendicular to each other, the number of multiple images formed by them is:

Choices

Choice (4)Response

a.

b.

3

c.

4

d.

0

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