# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1058 - 1063 of 1484

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## Question 1058

### Question

MCQ▾

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.

Radius of curvature

d.

All of the above

## Question 1059

### Question

MCQ▾

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 1060

### Question

MCQ▾

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 1061

### Question

MCQ▾

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 1062

### Question

MCQ▾

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

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.

## Question 1063

### Question

MCQ▾

In an experiment the object distance and image distance are and , respectively. Then calculate the radius of the curvature of the convex lens using in this experiment.

### Choices

Choice (4)Response

a.

b.

c.

d.

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