State whether light slows down or speeds up in the following cases :
Light going from water to air.

State whether light slows down or speeds up in the following cases : Light going from air to glass.

State whether light slows down or speeds up in the following cases : Light going from glass to water.

State the speed of light

What is the shape of the wavefront in each of the following cases ? Light diverging from a point source.

A: The speed of light in water is not same as that in flowing water. R: The speed of light in water is not independent of the relative motion between the observer and the medium.

State the speed of light in glass

The diagram below shows a glass block suspended in a liquid. A beam of light of single colour is incident from liquid on one side of the block. (a) Draw diagrams to show how does the light bend when it travels from liquid to glass and then to liquid if (i) the light slows down in glass, and (ii) the light speeds up in glass. (b) State two conditions under which the light ray passing from liquid to glass travels straight without bending. will the glass be visible then ?

Draw a ray diagram showing the path of rays of light when it enters with oblique incidence (i) from air into water , (ii) from water into air.

The Brewster angle for the glass air interface is 54.74^(@) if a ray of light going from air to glass strikes at an angle of incidence 45^(@) then the angle of refraction is

The Brewster angle for the glass air interface is 54.74^(@) if a ray of light going from air to glass strikes at an angle of incidence 45^(@) then the angle of refraction is