Question

How does the angular separation between fringes in single slit diffraction experiment change when the distance of separation between the slit and screen is double

Answer 1

The answer is-

In a single-slit diffraction experiment, the angular separation Фin terms wavelength. ∧and slit width a is given as,

Ф = ∧/a

The above expression is independent of the distance of separation between the slit and screen. Therefore.the angular

separation will remain unchanged if the distance of separation between the slit and screen is doubled.