# Physics-Light [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 6 of 30

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## Question 1

Light
Edit

### Question

MCQ▾

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 2

Light
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### Question

MCQ▾

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

## Question 3

Light
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### Question

MCQ▾

If angle between two plane mirrors is , and object is placed between these two mirrors, then number of multiple images formed by these two mirror is,

### Choices

Choice (4)Response
a.3600
b.35
c.36
d.26

## Question 4

Light
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### Question

MCQ▾

We can see an object, because

### Choices

Choice (4)Response
a.reflects light by object falls on our eyes
b.our eyes projected light on object
c.falls light on object, reflected by eyes
d.All of the above

## Question 5

Light
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### Question

MCQ▾

The propagation of light is,

### Choices

Choice (4)Response
a.Either planar or rectilinear propagation
b.Cubic propagation
c.Planar propagation
d.Rectilinear propagation

### Passage

See the following diagram of human eye, and answer the questions given below it.

## Question 6 (1 of 3 Based on Passage)

Light
Edit

### Question

MCQ▾

What is the function of part of eye represented by , in figure?

### Choices

Choice (4)Response
a.Covers anterior chamber of eye
b.Controlling the amount of light entering the eye by contracting or dilating
c.On which image formed
d.Allows the light to fall on retina