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Q.

The correct formula for fringe visibility is

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a

$V = \frac{I_{m a x} - I_{m i n}}{I_{m a x} + I_{m i n}}$

b

$V = \frac{I_{m a x} + I_{m i n}}{I_{m a x} - I_{m i n}}$

c

$V = \frac{I_{m a x}}{I_{m i n}}$

d

$V = \frac{I_{m i n}}{I_{m a x}}$

answer is A.

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Detailed Solution

Fringe visibility (V) is given by $V = \frac{I_{m a x} - I_{m i n}}{I_{m a x} + I_{m i n}}$

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