Class 12 Physics Wave Optics Important Questions

Class 12 Physics wave Optics Important Questions. We covered all the Class 12 Physics wave Optics Important Questions in this post for free so that you can practice well for the exam.

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Class 12 Physics wave Optics qna for Students

An interference pattern formed by monochromatic Light consists of

a) Alternating bright and dark fringes

b) Only bright fringes

c) Only dark fringes

d) Coloured fringes

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Which of the following conditions stated for producing steady and observable interference of Light is incorrect?

a) The two sources must emit waves continuously with the same wavelength

b) The two sources should be coherent

c) The sources should be very narrow and placed close to each other

d) The amplitudes of waves from the two sources must be unequal

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Two Light waves of equal amplitude $a$a, travelling through a medium, reach a point with a phase difference of π. The resultant amplitude at that point is

a) Zero

b) 2a

c) 3a

d) 4a

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If the intensities of two superposing Light sources are $I$I and $4I$4I, the maximum and minimum intensities in the interference pattern will be

a) 9I and 3I

b) 5I and 3I

c) 9I and I

d) 2I and I

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When petrol droplets spread over rainwater on a road produce colourful patterns, the phenomenon responsible is

a) Dispersion of Light

b) Absorption of Light

c) Scattering of Light

d) Interference of Light

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If the ratio of maximum to minimum intensity in an interference pattern is infinite, the ratio of the amplitudes of the two sources is

a) Unity

b) Infinite

c) Two

d) Cannot be determined

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Two Light waves of equal amplitude $a$a travelling through a medium reach a point in the same phase. The resultant intensity at that point is

a) $a^{2}$

b) $2a^{2}$

c) $3a^{2}$

d) $4a^{2}$

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We covered all the Class 12 Physics wave Optics important Questions above in this post for free so that you can practice well for the exam.

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Also, check out:

• Previous Year Question Paper Class 12 Physics Bihar Board
• Nootan Class 12 Physics Solution
• Nageen Prakashan Physics Class 12