# Ray Optics (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 5 - 8 of 13

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## Question number: 5

» Ray Optics » Spherical Mirror

Appeared in Year: 2013

MCQ▾

### Question

A ray of light incident on a glass sphere suffers total internal reflection before emerging out exactly parallel to the incident ray. The angle of incidence was –

### Choices

Choice (4) Response

a.

300

b.

750

c.

600

d.

450

## Question number: 6

» Ray Optics » Snell's Law

Appeared in Year: 2012

MCQ▾

### Question

On a bright sunny day a diver with height h stands at the bottom of a lake of depth H. Looking upward, he can see objects outside the lake in a circular region of radius r. Beyond this circle he sees the images of objects lying on the floor of the lake. If refractive index of water is, then the value of r is,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 7

» Ray Optics » Reflection and Refraction of Light

Appeared in Year: 2014

MCQ▾

### Question

Monochromatic light passes through a prism. Compared to that in air, inside the prism the light’s

### Choices

Choice (4) Response

a.

wavelength and frequency are different, but speed remains same.

b.

speed and wavelength are different but frequency remains same.

c.

speed, wavelength and frequency are all different.

d.

speed and frequency are different but wavelength remains same.

## Question number: 8

» Ray Optics » Mirror Formula

Appeared in Year: 2014

MCQ▾

### Question

The flat face of a Plano-convex lens of focal length 10 cm is silvered. A point source placed 30 cm in front of the curved surface will produce a

### Choices

Choice (4) Response

a.

Real image 6 cm away from the lens

b.

Real image 15 cm away from the lens

c.

virtual image 15 cm away from the lens

d.

virtual image 6 cm away from the lens

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