# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1057 - 1062 of 1484

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## Question number: 1057

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MCQ▾

### Question

What is the angle of the reflection in following figure?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1058

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MCQ▾

### Question

The distance from the focal point to the centre of the lens, is called:

### Choices

Choice (4) Response

a.

Image distance

b.

Focal length

c.

d.

All of the above

## Question number: 1059

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MCQ▾

### Question

The speed of light in a medium is . The refractive index of the medium is:

### Choices

Choice (4) Response

a.

1.5

b.

1

c.

1.33

d.

1.75

## Question number: 1060

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MCQ▾

### Question

The object distance and image distance are and , respectively, measured for an experiment. The lens using for this experiment is converging lens. The focal length of this converging is:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1061

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MCQ▾

### Question

If the object distance of a converging lens is and the image distance is . If the height of the object is , then the magnitude of height of the image is:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1062

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MCQ▾

### Question

A ray of light is travels from air to water as shown in below figure.

The refractive indexes of the water and air are and respectively. Find angle of incident ray approximately.

### Choices

Choice (4) Response

a.

b.

c.

d.

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