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Light of wavelength 6328 Å is incident n...

Light of wavelength `6328 Å` is incident normally on a slit having a width of `0.2mm` The width of the central maximum on a screen 9m away will be nearly

A

`0.9^@`

B

`0.18^@`

C

`0.54^@`

D

`0.36^@`

Text Solution

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The correct Answer is:
D
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