Ray Optics (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 4 - 7 of 13

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Question number: 4

» Ray Optics » Snell's Law

Appeared in Year: 2011

MCQ▾

Question

A material is embedded between two glass plates. Refractive index n of the material varies with thickness as shown below. The maximum incident angle (in degrees) on the material for which beam will pass through the material is –

Graph of refractive index verses thickness

Graph of Refractive Index Verses Thickness

Figure shows refractive index n of material varies with thickness x.

Choices

Choice (4) Response
a.

60.0

b.

53.1

c.

43.5

d.

32.3

Question number: 5

» Ray Optics » Spherical Mirror

Appeared in Year: 2013

MCQ▾

Question

A ray of light incident on a glass sphere (refractiveindex3) 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 43 , then the value of r is,

Choices

Choice (4) Response
a.

3h7

b.

Hh73

c.

3(Hh)7

d.

(Hh)53

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.

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