Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter 0.1μm. If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such thtat :
Select the correct option:
A
its size decreases, and intensity decreases
B
its size increases, and intensity increases
C
its size increases, but intensity decreases
D
its size decreases, but intensity increases
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$$
\sin \theta=\frac{m \lambda}{a} c
$$
when a increases, $\theta$ decreases,
width decreases
width decreases so intensity will increases
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