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Light of wavelength lamda is incident on...

Light of wavelength `lamda` is incident on a slit of width d. the resulting diffraction pattern is observed on a screen at a distance D. the linear width of the principal maximum is equal to the width of the slit if D equals

A

`(d^(2))/(2lamda)`

B

`(2lamda^(2))/d`

C

`d/(lamda)`

D

`(2lamda)/d`

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