REFLECTION OF LIGHT
WORKSHEET- 1
[Solve the following questions. State the reasons, formula etc. properly. ]
1. An object is moving towards a plane mirror at a speed of 2 cm/s. Calculate the speed of
the image with respect to the mirror and the object respectively.
2. A light ray is incident on a plane mirror at an angle of 600. Calculate the angle of
deviation of the light.
3. A light is incident on a plane mirror making an angle of 60 0 with the surface of the
mirror. Calculate the angle of deviation of the light ray.
4. Complete the following ray diagram if AB and BC are two perfectly reflecting planes.
Incident light ray, DE and BC are parallel. DN is the normal drawn at the point of
incidence.
Figure-1
5. Two light rays are emitted from two different sources at an angle of 20 0 with respect to
each other (as shown below). Light rays are incident on a plane mirror. (i) Calculate the
angle between the reflected light rays. (ii) Complete the ray diagram. (iii) What type of
image can be obtained?
Figure-2
6. An object is placed in front of a thick plane mirror. Many images can be formed by the
mirror. All the images, so formed, are not equally bright. State the reason. Which image
is usually the brightest? Justify your answer.
SB (PHY)