Home Physics Wave Optics All Topic Question for Revision Test In Young's double slit experiment, instead o…
Physics Wave Optics All Topic Question for Revision Test MCQ (Single Correct)

In Young's double slit experiment, instead of taking slits of equal widths, one slit is made twice as wide as the other. Then, in the interference pattern

A
the intensities of both the maxima and the minima increase
B
the intensity of maxima increases and the minima has zero intensity
C
the intensity of maxima decreases and that of the minima increases
D
the intensity of maxima decreases and the minima has zero intensity

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Text Solution

Verified by Experts
The correct answer is:
A

In interference between waves of equal amplitudes , the minimum intensity is zero and the maximum intensity is proportional to (because slit width amplitude). For waves of unequal amplitudes and , the minimum intensity is non-zero and the maximum intensity is proportional to , which is greater than .
So, the intensities of both the maxima and the minima increase.

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