A ray of light strikes a plane mirror at an angle of inci...
A ray of light strikes a plane mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what angle is the reflected ray rotated?
70°
45°
25°
20°
Correct answer is D
When ever a ray of light is incident on a plane mirror at an angle of incidence l, if the mirror is then rotated through an angle θ, then the reflected ray is rotated through an angle twice θ
So if θ = 35°, then the reflected ray is rotated through 2 x 10o = 20°
Which of the following physical quantities is correctly paired with it's corresponding S.I unit?...
When the breaks in a car are applied, the frictional force on the tyres is? ...
The instrument used to view stars is the ...
A block of ice of mass 10kg at 0°C absorbs heat energy from its surroundings and changes to wate...
The difference between sound waves and light waves is that sound waves ...