MHT CET 2023 Physics question

Of the two slits producing interference in Young's experiment, one is covered with glass so that light intensity passing is reduced to 50%. Which of the following is correct?

(A)Intensity of fringes remains unaltered
(B)Intensity of bright fringe decreases and that of dark fringe increasesCorrect
(C)Intensity of bright fringe increases and that of dark fringe decreases
(D)Intensity of both bright and dark fringes decreases

Answer: (B)

Solution

Let each slit originally give intensity . Then and . After one slit is covered, its intensity becomes , so and

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-097838