6.2.2 Reflection

1. Reflection occurs when an incident wave hits a reflector and reflected back.
2. The direction of propagation of the wave changed when it is reflected.
3. The wavelength, frequency and speed of wave remain unchanged.
4. The amplitude of the wave may or may not change depend on the material of the reflector and the shape of the wavefront.

Reflection of Straight and Circular Wave

1. Reflection of waves obeys the law of reflection, that is
   1. The angle of incident is equal to the angle of reflection
   2. The incident wave, reflected wave and the normal lie on the same plane.
2. For reflection of circular wave, the distance of image from the reflector is equal to the distance of source of wave from the reflector.

(Reflection of Straight Plane Wave)

(Reflection of Circular Wave)