A longitudinal wave travels from a rarer medium to a denser medium and gets reflected. Draw a diagram to explain the reflection

When a wave travels from a denser to rarer medium, then

(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.

When a longitudinal wave travels from one medium to another, a compression is reflected as a rarefaction. What can you say about the medium ?

When a light ray from a rarer medium is refracted into a denser medium, its

When a ray of light travels obliquely from a rarer medium to a denser medium, it bends away from the normal.

A ray of light is moving from a rarer medium to a denser medium and strikes a plane mirror placed at 90^(@) to the direction of the ray as shown in the diagram. Name the principle you have used to mark the arrows to show the direction of the ray.

A : When a light wave travels from a rarer to a denser medium, it looses speed. The reduction in speed imply a reduction in energy carried by the light wave. R : The energy of a wave of proportional to frequency of wave.

Assertion: When a light wave travels from a rarer to a denser medium, it loses speed. The reduction in speed imply a reduction in energy carried by the light wave. Reason: The energy of a wave is proportional to velocity of wave.

A: When light travels from a rarer to a denser medium, it loses some speed but it doesn't imply a reduction in the energy carried by the light wave. R: Energy carried by a wave depends on the amplitude of the wave and not on the speed of wave propagation.