Deduce the laws of reflection on the basis of Huygen's principle or wave theory.

What is the importance of Huygens' principle?

State and explain Huygen's principle.

By using Huygens's principle, the laws of reflection of light.

State Huygen's principle of propagation of light and prove the laws (Snell's law) of refraction on its basis.

Explain Huygens's principle for the progagation of light waves ina medium and locate, the position of wavefront after a time 't'.

A plane wave front AB propagating from denser medium (1)into a rarer medium (2) is incident on the surface P_1P_2 separating the two media as shown in the figure. Using Huygen's principle, draw the secondary wavelets and obtain the refracted wave front in the diagram.

According to Huygen's principle, light is a form of

What are the two assumptions on which Huygens' principle is based? Explain Huygen's geometrical construction for the wavefronts.