JEE Main 2025 Physics question

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

(1)There shall be alternate interference fringes of red and green.
(2)There shall be an interference pattern for red distinct from that for green.
(3)There shall be no interference fringes.Correct
(4)There shall be an interference pattern, where each fringe's pattern center is green and outer edges is red.

Answer: (3)

Solution

Since red and green light have different frequencies, phase difference does not remain constant, so no interference pattern is observed.

Question ID VK-002819