Write Huygen's principle and principle basically composited ?
Huygen's conception of secondary waves
You have learnt in the text how Huygens’ principle leads to the laws of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose distance from the mirror is equal to the object distance from the mirror.
When a plane wave front incident on a concave mirror as shown in figure then shape of reflected wave front
In the adjacent diagram,$ CP$ represents a wavefront and $AO$ & $BP$, the corresponding two rays. Find the condition on $\theta$ for constructive interference at $P$ between the ray $BP$ and reflected ray $OP$
Explain the reflection of a plane wave using Huygen's principle.