Wave Optics-Interference (NEET Physics): Questions 1 - 6 of 7

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Question number: 1

» Wave Optics » Interference

MCQ▾

Question

The intensity ratio of two waves is 9: 1. These waves produce the event of interference. The ratio of maximum to minimum intensity will be

Choices

Choice (4) Response

a.

1: 4

b.

1: 9

c.

9: 1

d.

4: 1

Question number: 2

» Wave Optics » Interference

MCQ▾

Question

Consider interference between waves from two sources of intensities are I & 4I. Find intensities at points where the phase difference is π2 .

Choices

Choice (4) Response

a.

I

b.

4I

c.

3I

d.

5I

Question number: 3

» Wave Optics » Interference

MCQ▾

Question

The equation of two light waves are y1=6cosωt , y2=8cos(ωt+Φ) . The ratio of maximum to minimum intensities produced by the superposition of these waves will be

Choices

Choice (4) Response

a.

1: 7

b.

49: 1

c.

7: 1

d.

1: 49

Question number: 4

» Wave Optics » Interference

MCQ▾

Question

The intensities of two light sources are I and 9I respectively. If the phase difference between the waves emitted by them is π then the resultant intensity at the point of observation will be –

Choices

Choice (4) Response

a.

3I

b.

10I

c.

82I

d.

4I

Question number: 5

» Wave Optics » Interference

MCQ▾

Question

Two coherent sources of intensity ratio 1: 4 produce an interference pattern. The fringe visibility will be –

Choices

Choice (4) Response

a.

1

b.

0.6

c.

0.4

d.

0.8

Question number: 6

» Wave Optics » Interference

Assertion-Reason▾

Assertion (Ꭺ)

A 5 % change in wavelength of light received from a star, shows that the star is moving with 0.05 c velocity.

Reason (Ꭱ)

The wavelength of emitted light depends upon the velocity of the source.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

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