Chapter 10: Wave Optics MCQs | physics Class 12 CBSE

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Chapter 10: Wave Optics MCQs | physics Class 12 CBSE | ByteNotes.in

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Question 1

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A wavefront is defined as a surface on which all points have the same

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Question 2

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According to Huygens principle, each point on a wavefront acts as a source of secondary wavelets. The new wavefront at a later time is the

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Question 3

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The energy of a wave travels in a direction that is

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Question 4

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At a large distance from a point source, the wavefront can be approximated as

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Question 5

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The wave model of light predicts that when a ray is refracted toward the normal on entering a denser medium, the speed of light in the denser medium is

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Question 6

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When light travels from air (n1 = 1) into glass (n2 = 1.5), which of the following remains unchanged?

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Question 7

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The critical angle for total internal reflection at a glass-air interface (n_glass = 1.5) is approximately

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Question 8

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Total internal reflection occurs when light travels from a denser medium to a rarer medium and the angle of incidence

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Question 9

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Two sources are said to be coherent if the phase difference between them at any observation point

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Question 10

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For two coherent sources vibrating in phase, constructive interference occurs at a point P when the path difference S1P ~ S2P equals

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Question 11

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The resultant intensity at a point where the phase difference between two coherent waves (each of intensity I0) is π is

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Question 12

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When two coherent sources of equal intensity I0 interfere constructively, the resultant intensity is

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Question 13

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In Young's double-slit experiment, the fringe width β is given by β = λD/d. If the slit separation d is doubled and the screen distance D is halved, the new fringe width is

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Question 14

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In Young's double-slit experiment, the dark fringes are located at positions x = (n + 1/2)λD/d. The distance between the second dark fringe and the third dark fringe from the centre is

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Question 15

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Why do two independent sodium lamps illuminating two pinholes not produce interference fringes on a screen?

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Question 16

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In Young's double-slit experiment, if the intensity at the central maximum is I_max = 4I0, the intensity at a point where the path difference is λ/3 is

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Question 17

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In single-slit diffraction, the minima (zero intensity) occur at angles θ where

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Question 18

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In single-slit diffraction, the width of the central maximum (distance between first minima on either side) on a screen at distance D is

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Question 19

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In single-slit diffraction, the secondary maxima occur approximately at angles θ where

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Question 20

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According to the chapter, Richard Feynman stated that the difference between interference and diffraction is

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Chapter 10: Wave Optics | MCQs

A wavefront is defined as a surface on which all points have the same

According to Huygens principle, each point on a wavefront acts as a source of secondary wavelets. The new wavefront at a later time is the

The energy of a wave travels in a direction that is

At a large distance from a point source, the wavefront can be approximated as

The wave model of light predicts that when a ray is refracted toward the normal on entering a denser medium, the speed of light in the denser medium is

When light travels from air (n1 = 1) into glass (n2 = 1.5), which of the following remains unchanged?

The critical angle for total internal reflection at a glass-air interface (n_glass = 1.5) is approximately

Total internal reflection occurs when light travels from a denser medium to a rarer medium and the angle of incidence

Two sources are said to be coherent if the phase difference between them at any observation point

For two coherent sources vibrating in phase, constructive interference occurs at a point P when the path difference S1P ~ S2P equals

The resultant intensity at a point where the phase difference between two coherent waves (each of intensity I0) is π is

When two coherent sources of equal intensity I0 interfere constructively, the resultant intensity is

In Young's double-slit experiment, the fringe width β is given by β = λD/d. If the slit separation d is doubled and the screen distance D is halved, the new fringe width is

In Young's double-slit experiment, the dark fringes are located at positions x = (n + 1/2)λD/d. The distance between the second dark fringe and the third dark fringe from the centre is

Why do two independent sodium lamps illuminating two pinholes not produce interference fringes on a screen?

In Young's double-slit experiment, if the intensity at the central maximum is I_max = 4I0, the intensity at a point where the path difference is λ/3 is

In single-slit diffraction, the minima (zero intensity) occur at angles θ where

In single-slit diffraction, the width of the central maximum (distance between first minima on either side) on a screen at distance D is

In single-slit diffraction, the secondary maxima occur approximately at angles θ where

According to the chapter, Richard Feynman stated that the difference between interference and diffraction is

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