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The slits in Young's double slit experim...

The slits in Young's double slit experiment are illuminated by light of wavelength 6000 Ã…. If the path difference at the central bright fright fringe is zero, what is the path difference for light from the slits at the fourth bright frings?

A

`2.4xx10^(-6)` m

B

`1.2xx10^(-6)` m

C

`10^(-6)` m

D

`0.5xx10^(-6)` m

Text Solution

Verified by Experts

The correct Answer is:
A
The path difference at the centre is zero. The path difference at the `4^(th)` bright fringe `=4lambda`
Hence, `lambda=6000xx10^(-10)m`
`:.` Path difference `=4xx6000xx10^(-10)=24xx10^(-7)`
`=2.4xx10^(-6)m`
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