A mjrror is turned through `15^@` . By what angle will the reflected ray turn?

If a light ray is incident on a horizontal plane mirror making an angle 30^(@) with the mirror, what angle will the reflected ray make with the mirror ?

What is incident ray and reflected ray?

Show that for a given incident ray, if the mirror is rotated by an angle theta , the reflected ray rotates by 2theta .

A ray of light is incident on the plane face of a liquid at an angle 45^(@) and due to refraction the ray is deviated through an angle 15^(@) . Calculate the refractive index of the liquid.

Length of a solenoid is 50 cm and its total number of turns is 1250. if 2A current is a passed through it, what will be the magnetic field at any point on its axis ?

A ray of light passing through the medium of refractive index mu_(1) is incident on the surface of separation of another medium of refractive index mu_(2) . A part of the ray is reflected and another part is refracted. What should be the angle of incident so that reflected ray and the refracted ray are at right angles to each other?

When a light ray in air is incident on glass at 57^(@) , the reflected ray is completely polarised. If the same ray is incident on water at an angle theta , also the reflected ray is completely polarised. Then