Ray Optics (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 3 of 13

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Question number: 1

» Ray Optics » Total Internal Reflection

Appeared in Year: 2010

MCQ▾

Question

A point source of light is placed at the bottom of a vessel which is filled with water of refractive index μ to a height h. If a floating opaque disc has to be placed exactly above it so that the source is invisible from above, the radius of the disc should be –

Choices

Choice (4) Response

a.

hμ21

b.

hμ1

c.

hμ21

d.

μhμ21

Question number: 2

» Ray Optics » Snell's Law

Appeared in Year: 2010

MCQ▾

Question

Three transparent media of refractive indices µ1, µ2, µ3 respectively, are stacked as shown. A ray of light follows the path shown. No light enters the third medium.

 Beam of light passing through three transparent mediums

Beam of Light Passing Through Three Transparent Mediums

In figure path of a ray of light passing through three mediums having different refractive indexes is shown.

Then-

Choices

Choice (4) Response

a.

µ1<µ3<µ2

b.

µ2<µ1<µ3

c.

µ3<µ1<µ2

d.

µ1<µ2<µ3

Question number: 3

» Ray Optics » Lens Maker's Formula and Lens Formula

Appeared in Year: 2010

MCQ▾

Question

A narrow parallel beam of light falls on a glass sphere of radius R and refractive index µ at normal incidence. The distance of the image from the outer edge is given by

Choices

Choice (4) Response

a.

R(2+μ)2(μ1)

b.

R(2+μ)2(μ+1)

c.

R(2μ)2(μ+1)

d.

R(2μ)2(μ1)

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