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Consider the diffraction pattern obtaine...

Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter `0.1mum`. If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such thtat :

A

Its size decreases, but intensity increases

B

Its size increases, but intensity decreases

C

Its size decreases, and intensity decreases

D

Its size increases, and intensity increases

Text Solution

Verified by Experts

The correct Answer is:
A
`sin theta = (m lambda)/( a)`
When a increases,` theta ` decreases, width decreases
So, intensity will increase
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