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In Young's double slit experiment if wav...

In Young's double slit experiment if wavelength of light is doubled without changing other conditions, the fringe width will

A

be doulbed

B

halved

C

be quadrupled

D

remin unchanged

Text Solution

Verified by Experts

The correct Answer is:
A
`lambda_(2)=2lambda_(1)= beta_(2) = ?`
`beta prop lambda`
`(beta_(2))/(beta_(1))= (lambda_(2))/(lambda_(1))`
`:. beta_(2)=(lambda_(2))/(lambda_(1)) beta_(1)`
`2 beta_(1)=` doubled
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