Draw a figure showing the following.

a. Incident Ray

b. Normal

c. Angle of incidence

d. Angle of reflection

e. Point of incidence

f. Reflected ray

How will you explain the statement ‘we cannot see the objects in a dark room’?

Explain the difference between the regular and irregular reflection of light.

Study the following incident. Swara and Yash were looking in a water filled vessel. They could see their images clearly in the still water. At that instant, Yash threw a stone in the water. Now their images were blurred. Swara could not understand the reason for the blurring of the images. Explain the reason for blurring of the images to Swara by answering the following question.

i. Is there a relation between the reflection of light and the blurring of the images?

ii. Which types of reflection of light can you notice from this?

iii. Are laws of reflection followed in these types of reflection?

Solve the following examples.

If the angle between the plane mirror and the incident ray is 40⁰ , what are the angles of incidence and reflection?