Question:
Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter $0.1 \mu \mathrm{m}$. If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such thtat :
Correct Option: , 4
Solution:
$\sin \theta=\frac{m \lambda}{a}$
when a increases, $\theta$ decreases,
width decreases
width decreases so intensity will increases