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

Find the right condition(s) for Fraunhofer 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

Text Solution

Verified by Experts

The correct Answer is:
B, C
In Fraunhoffer diffraction, the incident rays on the slit are parallel. This can be achieved by keeping
(a) point source at the focus of a converging lens
(b) point source of infinite distance.
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