Mention the name of an object which does not allow the light to pass through it.

2

(a)

Mention the name of an object which partially allows the light to pass through it.

2

(a)

If an object is of two different colours, then what will be the colour of shadow?

2

(a)

Mention the type of image is formed in pinhole camera.

2

(a)

As we know that moon appears to be bright at night. Does it mean that it is an luminous object?

2

(a)

Do the shadows look different in colour when the colours of the objects are different?

2

(a)

How do we see the objects around us?

2

(a)

Can we see any object in a completely dark room?

2

(a)

What do we see on the ground, when sunlight falls on the opaque objects?

2

(a)

What property of light is responsible for the formation of shadows and pinhole images?

2

(a)

We see moon shining in the sky, then why is it called non-luminous?

2

(a)

What do you understand by incandescent body?

2

(a)

What are the conditions for formation of shadow?

2

(a)

Distinguish between transparent and translucent object

2

(a)

Why is the shadow of an aeroplane flying high in the sky not seen on the ground?

2

(a)