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In the young,s double -slit experiment ,...

In the young,s double -slit experiment ,the intensity of light at a point on the screen where the path difference is `lambda` is K,`(lambda` being the wavelenght of light used). The intersity at a point where the path difference is `lambda//4`, will be

A

K

B

`K/4`

C

`K/2`

D

Zero

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