Physics · Wave Optics

JEE Main 2025 — 8 April, Evening Shift — Question 48

In a Young's double slit experiment, the source is white light. One of the slits is covered by red filter and another by a green filter. In this case

Option A:
There shall be alternate interference fringes of red and green.
Option B:
There shall be an interference pattern for red distinct from that for green.
Option C:
There shall be no interference fringes.
Correct
Option D:
There shall be an interference pattern, where each fringe's pattern center is green and outer edges is red.

Answer: C

Frequency of Green and frequency of Red will be different. No interference pattern is observed for two

lights of different frequencies as phase difference does not remain constant.

Answer key and solution verified before publishing.

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