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If the intensities of the two interfereing beams in Young’s double – Slit experiment be I1 and I2 then the contrast between the maximum and minimum
intensity is good when

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a
I1 is much greater than I2
b
I2 is much smaller than I2
c
I1 = I2
d
Either I1 = 0 or I2 = 0

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detailed solution

Correct option is C

Resultant intensity at a point on the screen is given by,When  When So constant ration Increases as  and  tends to be equal.


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