Write any two applications of interference.

Interference is a phenomenon in which two waves combine by adding their displacement together at every single point in space and time, to form a resultant wave of greater, lower, or the same amplitude.

Application of interference:

In optical testing, interference is used in testing surface quality like: flat surface, spherical surface, roughness of surface etc.

Whereas in space applications include Radio astronomy, measuring light intensity, in retrieving images from the telescopes.

Application of interference are in optical testing, interference is used in testing surface quality like: flat surface, spherical surface, roughness of surface etc. and in space applications include Radio astronomy, measuring light intensity, in retrieving images from the telescopes.