Wave Optics (JEE (Based on NTA Guidelines-IIT Engg.) Advanced Physics): Questions 1 - 4 of 9

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Question number: 1

» Wave Optics » Young's Double Slit Experiment

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Appeared in Year: 2009

MCQ▾

Question

A mixture of light, consisting of wavelength and an unknown wavelength, illuminates Young’s double slit and gives rise to two overlapping interference patterns on the screen. The central maximum of both lights coincide. Further, it is observed that the third bright fringe of known light coincides with the bright fringe of the unknown light. From this data, the wavelength of the unknown light is: (AIEEE)

Choices

Choice (4) Response

a.

b.

c.

d.

Passage

An initially parallel cylindrical beam travels in a medium of refractive index , where and are positive constants and is the intensity of the light beam. The intensity of the beam is decreasing with increasing radius. (AIEEE)

Question number: 2 (1 of 1 Based on Passage) Show Passage

» Wave Optics » Wavefront

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Appeared in Year: 2010

MCQ▾

Question

The initial shape of the wave front of the beam is:

Choices

Choice (4) Response

a.

planar

b.

convex

c.

concave

d.

convex near the axis and concave near the periphery

Question number: 3

» Wave Optics » Malus' Law and Its Application

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Appeared in Year: 2015

MCQ▾

Question

Four harmonic waves of equal frequencies and equal intensities have phase angle and . When they are superposed, the intensity of the resulting wave in . The value of is:

Choices

Choice (4) Response

a.

7

b.

3

c.

9

d.

5

Question number: 4

» Wave Optics » Young's Double Slit Experiment

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Appeared in Year: 2015

MCQ▾

Question

A Young’s double slit interference arrangement with slits and is immersed in water (refractive index = ) as shown in the figure. The positions of maxima on the surface of water are given by , where is the wavelength of light in air (refractive index = 1), is the separation between the slits and is an integer. The value of is:

 Young’s double slits experiment

Young’S Double Slits Experiment

In figure young’s double slits experiment immersed in water is shown.

Choices

Choice (4) Response

a.

3

b.

7

c.

6

d.

5

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