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In Young's double-slit experiment, the s...

In Young's double-slit experiment, the separation between the slits is halved and the distance between the slits and the screen in doubled. The fringe width is

A

unchanged

B

halved

C

doubled

D

quadrupled

Text Solution

Verified by Experts

The correct Answer is:
D
Fringe width `beta=(lamdaD)/(d)`,
`beta'=(lamda'D')/(d')=(lamdaxx2D)/(d//2),beta'=4(lamdaD)/(d)=4beta`
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