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 minimumintensity is good when

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I1 is much greater than I2

I2 is much smaller than I2

I1 = I2

Either I1 = 0 or I2 = 0

answer is C.

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Detailed Solution

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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