Where $d$ is width of the strips. Fringe visibility is defined as

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

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

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\frac{I_{m a x} - I_{m i n}}{I_{m a x}}

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\frac{I_{m a x} + I_{m i n}}{I_{m a x} + I_{m i n}}

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Solution

The correct option is A $\frac{I_{m a x} - I_{m i n}}{I_{m a x} + I_{m i n}}$
Fringe visibility quantifies the contrast of interference in any system which has wave-like properties. It is defined as $\frac{I_{m a x} - I_{m i n}}{I_{m a x} + I_{m i n}}$ .

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Similar questions

4,

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

α

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

β

(I_{m a x} - I_{m i n}) / (I_{m a x} + I_{m i n})

β

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

Two coherent sources of intensity ratio $β$ interfere. Then the value of $(\frac{I_{max} - I_{min}}{I_{max} + I_{min}})$ is:

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