If the light waves pass through a Nicol prism,then all the oscillation occur only in one plane,such beam of light is called as------

Does light pass through all the media at the same speed ?

When a beam of light is passed through a colloidal solution, It

Fill in the blanks. A vertical plane containing the longitude circle (at the plane) and axis of rotation of the earth is called______ . Similarly a vertical plane passing through a place and containing the axial line connecting the magnetic north-south poles of earth is called______ .