Optics Question 1068

Question: In Young’s double slit interference experiment, the slit separation is made 3 fold. The fringe width becomes

[CPMT 1982, 89]

Options:

A) 1/3 times

B) 1/9 times

C) 3 times

D) 9 times

Show Answer

Answer:

Correct Answer: A

Solution:

$ \beta \propto \frac{1}{d} $

Therefore If d becomes thrice, then $ \beta $ become becomes $ \frac{1}{3} $ times.



NCERT Chapter Video Solution

Dual Pane