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In young's double slit experiment, the s...

In young's double slit experiment, the seperation between the slits is halved and the distance between the slits and the screen is 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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