Question

Draw the intensity pattern for single slit diffraction and double slit interference. Hence, state two differences between interference and diffraction patterns.

Answer 1

Difference between interference and diffraction patterns:
(1) Interference fringes are of the same width while diffraction fringes are not of the same width.
(2) In interference pattern, all bright bands are of same intensity while in diffraction pattern, all bright bands are not of same intensity.