A parallel beam of light ( =5000 A ) is incident normally on a na… - Vidyadip

MCQ

A parallel beam of light $(\lambda=5000 A )$ is incident normally on a narrow slit of width $0.2 mm$. The Fraunhofer diffraction pattern is observed on a screen placed at the focal plane of a convex lens $(f=20 cm )$. The first two minima are separated by

A
$0.005 cm$
✓
$0.05 cm$
C
$2.5 mm$
D
$5 mm$.

✓

Answer

Correct option: B.

$0.05 cm$

$0.05 cm$

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