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The path difference between two wavefron...

The path difference between two wavefronts emitted by coherent sources of wavelength 5460 Å is 2.1 micron . The phase difference between the wavefronts at that point is –

A

7.692

B

`7.692pi`

C

`7.692/pi`

D

`7.692/(3pi)`

Text Solution

Verified by Experts

The correct Answer is:
B
Phase diff. = `(2pi)/lamdax`
Path difference = `(2pixx2.1xx10^(-6))/(5460xx10^(-10))=7.692pi"radian"`.
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