# Ray Optics-Reflection and Refraction of Light (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 6 - 11 of 24

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## Question number: 6

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

MCQ▾

### Question

An air bubble in water acts as,

### Choices

Choice (4) Response

a.

A divergent lens

b.

A convergent lens

c.

A plane mirror

d.

None of the above

## Question number: 7

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

### Question

Find the number of images formed by two mutually perpendicular mirrors -

### Choices

Choice (4) Response

a.

2

b.

4

c.

1

d.

3

## Question number: 8

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

### Question

The angle θ between two plane mirrors producing five images of a given object is given by.

### Choices

Choice (4) Response

a.

15° < θ < 72°

b.

60° < θ < 72°

c.

30° < θ < 72°

d.

45° < θ < 72°

## Question number: 9

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

### Question

A plane mirror reflecting a ray of incident light is rotated through an angle θ about an axis through the point of incidence in the plane of the mirror perpendicular to the plane of incidence, then

(1) The reflected ray rotates through an angle 2θ

(2) The incident ray is fixed

(3) The reflected ray does not rotate

(4) The reflected ray rotates through an angle 0

Select the correct answers and mark it according to the following codes:

Codes:

### Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

## Question number: 10

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

### Question

A completely transparent material will be invisible in vacuum if its refractive index is,

### Choices

Choice (4) Response

a.

Unity

b.

Equal to1.33

c.

Greater than unity

d.

Less than unity

## Question number: 11

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

### Question

A point source of light B is placed at a distance L in front of the center of a mirror of width ‘d’ hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown in fig. The greatest distance over which he can see the image of the light source in the mirror is

### Choices

Choice (4) Response

a.

b.

d

c.

2d

d.

3d

f Page