Question

In a Young's double slit experiment λ= 500 nm, d = 1.0 mm and D = 1.0 m. Find the minimum distance from the central maximum for which the intensity is half of the maximum intensity.

Answer 1

Given that, D = 1 m, d = 1 mm = 10^–3 m, λ= 500 nm = 5 x10^–7 m