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

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Question 1

Light
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Question

MCQ▾

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 2

Light
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Question

MCQ▾

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 3

Light
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Question

MCQ▾

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 4

Light
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Question

MCQ▾

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 5

Light
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Question

MCQ▾

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 6

Light
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Question

MCQ▾

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 7

Light
Edit

Question

MCQ▾

Which of the following is the artificial source of light?

Choices

Choice (4)Response
a.Sun
b.Fire
c.Stars
d.Moon