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Monochromatic green light of wavelength 550 nm illuminates two parallel narrow slits `7.7mu m` apart. The angular deviation `theta` of third order (for m =3) bright fringe in radian and in degree

A

`21.6, 12.4^(@)`

B

`0.216, 1.24^(@)`

C

`0.216, 12.4^(@)`

D

`216, 1.24^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
`theta = (lambda)/(d)`
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