MHT CET 2023 Physics question
In Young's double slit experiment, green light is incident on two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?
Answer: (B)
Solution
The fringe width is , so fringes become closer (smaller ) if or decreases or increases. (a) Reducing the slit separation increases , so it is wrong. (b) Blue light has a shorter wavelength than
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