Wave Optics (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 4 - 6 of 6

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Question number: 4

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2012

MCQ▾

Question

In a Young’s double slit experiment the intensity of light at each slit is Ι0. Interference pattern is observed along a direction parallel to the line S1 S2 on screen S.

Basic set up of Young’s double slit experiment

Basic Set Up of Young’S Double Slit Experiment

In figure a basis set up of Young’s double slit experiment is shown, in which two slits S1 and S2 in front of S

The minimum, maximum, and the intensity averaged over the entire screen are respectively.

Choices

Choice (4) Response

a.

0, 4Ι0, 2Ι0

b.

0, 4Ι0, Ι0

c.

0, 2Ι0, Ι0

d.

I 0,2I0,3I02

Question number: 5

» Wave Optics » Malus' Law and Its Application

Appeared in Year: 2012

MCQ▾

Question

An unpolarized beam of light of intensity Ι0 passes through two linear polarizers making an angle of 300 with respect to each other. The emergent beam will have intensity.

Choices

Choice (4) Response

a.

I08

b.

3I04

c.

3I08

d.

3I04

Question number: 6

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2015

MCQ▾

Question

A beam of monoenergetic electros, which have been accelerated from rest by a potential U, is used to from an interference pattern in a Young’s Double Slit experiment. The electrons are now accelerated by potential 4U. Then the fringe width;

Choices

Choice (4) Response

a.

Remains the same.

b.

Is twice the original fringe width.

c.

Is half the original fringe width.

d.

Is one-fourth the original fringe width.

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