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A beam of light of wavelength 600 nm fro...

A beam of light of wavelength 600 nm from a distant source
falls on a single slit 1.0 mm wide and the resulting diffraction pattern is
observed on a screen 2m away. What is the distance between the first dark
fringe on either side of the central bright fringe?

A

`1.2 cm`

B

`1.2 mm`

C

`2.4 cm`

D

`2.4 mm`

Text Solution

Verified by Experts

The correct Answer is:
D
Distance between the first dark fringes on either side of central bright fringe
`=(2Dlambda)/a=(2xx2xx600xx10^(-9))/(1xx10^(-3))=2.4xx10^(-3) m=2.4 mm`
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