Practice portal › Wave Optics › Interference and Young's Double Slit Experiment

In a Young's double slit experiment, the width of one of the slit is three times the other slit. The amplitude of the light coming from a slit is proportional to the slit width. Find the ratio of the maximum to the minimum intensity in the interference pattern.

Asked in JEE Main 24th Feb 1st Shift 2021 · Intensity and coherent sources

• (1) 1 : 4
• (2) 3 : 1
• (3) 4 : 1
• (4) 2 : 1

Step-by-step solution

Why the other options are wrong

• (1) Inverts the ratio.
• (2) Gives the amplitude ratio.
• (4) Forgets to square (3+1)/(3-1).

Reading this solution needs no sign-in. You only sign in to practise against the clock and keep your progress.