Physics-Light [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 1 - 7 of 50

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Question number: 1

» Physics » Light

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MCQ▾

Question

Which of the following can be used as reflecting material in solar cookers?

Choices

Choice (4)Response

a.

Paper sheet

b.

Aluminium foil

c.

Plastic sheet

d.

All of the above

Question number: 2

» Physics » Light

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MCQ▾

Question

Angle of reflection is created between:

Choices

Choice (4)Response

a.

Reflected and refracted ray

b.

Normal and reflected ray

c.

Normal and refracted ray

d.

Incident and reflected ray

Question number: 3

» Physics » Light

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MCQ▾

Question

Objects that give light are known as:

Choices

Choice (4)Response

a.

Absorbers

b.

Source

c.

Refractor

d.

Question does not provide sufficient data or is vague

Question number: 4

» Physics » Light

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MCQ▾

Question

Spectacles works on the principle of ________?

Choices

Choice (4)Response

a.

Refraction

b.

Reflection

c.

None of the above

d.

All of the above

Question number: 5

» Physics » Light

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MCQ▾

Question

Which of the following alphabet will have the mirror image unchanged?

Choices

Choice (4)Response

a.

A

b.

O

c.

M

d.

All a. , b. and c. are correct

Question number: 6

» Physics » Light

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MCQ▾

Question

Two plane mirrors are placed at an angle of 45 degree. How many images will be formed?

Choices

Choice (4)Response

a.

8

b.

7

c.

Cannot be determined

d.

9

Question number: 7

» Physics » Light

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MCQ▾

Question

Which of the following is the artificial source of light?

Choices

Choice (4)Response

a.

Sun

b.

Fire

c.

Stars

d.

Moon

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