Width of the principal maximum on a scre...

Width of the principal maximum on a screen at a distance of 50 cm from the slit having width 0.02 cm is `312.5 times 10^-3`cm. If waves were incident normally on the slit, then wavelength of the light from the source will be –

A

6000A

B

6250A

C

6400A

D

6525A

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The correct Answer is:

B

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