Name the colours include in the composition of sunlight.

2

(a)

In the formation of a rainbow, what acts as tiny prisms?

2

(a)

Can you get a real image at any distance of the object from the convex mirror?

2

(a)

Can you name the mirrors used as side mirrors in scooters?

2

(a)

Consider if one half of a convex lens is covered with a black paper, then state whether this lens produces a complete image of the object

2

(a)

Briefly tell that how many reflected rays can be obtained from a single incident ray in respect of a plane mirror

2

(a)

State in brief what we can demonstrate by rotating Newton's colour disc very fastly.

2

(a)

Mention the name of lens which can converge the sun's rays to a point and burn a hole in the piece of paper.

2

(a)

An erect and enlarged image of an object is formed on a screen. Explain how this could be possible.

2

(a)

If standing before a plane mirror you touch your nose with your left hand, which hand of your image will touch your nose? What is this phenomenon called?

2

(a)

When the ray of light is reflected along the same line, what would be angle of incidence and angle of reflection? Explain.

2

(a)

What is a lens? How is it different from a mirror?

2

(a)

What is a mirror? What are the types of mirrors?

2

(a)

Light takes 8.5 minutes to reach the earth from the sun. What is the distance between the sun and the earth? Velocity of light is 3 X 10¹⁰ cm per second.

2

(a)

Prove that shiny surfaces reflect better light.

2

(a)