When progressive waves travelling through a medium which are incident normally on a rigid reflecting surface and get reflected with a phase change of

When progressive waves travelling through a medium which are incident normally on a free end and get reflected with a phase change of

When a simple harmonic progressive wave travels through the medium, the relation between phase difference and path difference is

When a light ray is incident normally on the surface of a plane mirror, the reflected ray deviates through an angle of ________

In case of a travelling wave, the reflection at a rigid boundary will take place with a phase change of

In case of a travelling wave, the reflection at a rigid boundary will take place with a phase change of

When a sound wave gets reflected from denser medium phase changes by

(a) What are standing waves or stationary waves ? (b) Show that when a transverse wave travels from a rarer to a denser medium it gets reflected with a phase change of pit . Also prove that wien a transverse wave travels from a denser to rarer medium it gets reflected from the surface separating the two media without any phase change.