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Find the right condition (s) for Fraunho...

Find the right condition (s) for Fraunhoffer diffraction due to a single slit.

A

source is at infinite distance and the incident beam has converged at the slit.

B

Source is near to the slit and the incident beam is parallel.

C

Source is at infinity and the incident beam is parallel.

D

Source is near to the slit and the incident beam has converged at the slit.

Text Solution

Verified by Experts

The beam of light incident on the slit has to be parallel- here the incident wavefront would become parallel wavefront. For this the source could be kept at infinity or the source could be placed near the slit and the parallel beam of light could be made to fall on the slit by using proper lens.
The options (B) and (C) are correct.
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