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In Young's double - slit experiment if y...

In Young's double - slit experiment if yellow light is replaced by blue light, the interference fringes become

A

wider

B

brighter

C

narrower

D

darker

Text Solution

Verified by Experts

The correct Answer is:
C
Fringe width, `beta = (lambda D)/(d)`
`therefore` If we replace yellow light with blue light, i.e., longer wavelength with shorter one, therefore the fringe width decreases.
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