A ray of light is incident on 'a plane mirror at an angle of 20^o. This mirror is rotated through, twice this angle, In this new position the angle between the incident ray and the reflected ray is

Similar Questions

The magnetic relay is a device used for ...

A transformer with 5500 turns in its primary winding is used between a 240V a.c supply and 120V kett...

A cell whose internal resistance is 0.55$\Omega$ delivers a current of 4 A to an external resistor...

If a reverse-biased voltage is applied across a p-n junction, the depletion layer width is ...

Which of the diagrams above shows the position at which a small ball-bearing is in neutral equi...

Calculate the quantity charge flowing through a conductor if a current of 10A passes through the con...

The frequency of a swinging pendulum is the ...

A body of mass 40kg is being dragged along the floor by a rope inclined at 60 degrees to the horizon...

The difference of potential between the terminals of cells is 2.2 volts. When a 4ohm resistor is con...

Which of the following materials is used to control the rate of neutron production in a nuclear reac...