Question

what is diffraction, reflection, interference as applied to mechanical and electromagnetic waves.

Answer 1

$\huge{ \tt{ \underline{Diffraction :}}}$

→ Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit.

$\huge{ \tt{ \underline{Reflection :}}}$

→ Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.

$\huge{ \tt{ \underline{Interference :}}}$

→ The effect is that of the addition of the amplitudes of the individual waves at each point affected by more than one wave is known as “Interference”.

${ \bf{ \underline{Electromagnetic \: Waves :}}}$

→ Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.