Question

Various points of an arbitrary surface, as they are reached by a wavefront become the sources of secondary wavelets, this construction follows from :

• A. Newton's Corpuscular theory
• B. Young's double slit experiment
• C. Photoelectric effect
• D. Huygen's principle

Answer 1

The correct option is D Huygen's principle

Various points of an arbitrary surface, as they are reached by a wavefront, becomes sources of secondary wavelets. The geometrical envelope of these wavelets at any given later instant represents the new position of wavefront at that instant. This construction is followed from Huygen's principle.