LIGHT, SHADOW AND REFLECTION

Which of these are examples of luminous objects?

• Sun

• Firefly

• Moon

• Wood

Which of these is true for an image formed by a pinhole camera?

• It is of the same size as the object.

• It is of the same colour as the object.

• It cannot be formed without a screen.

• It can be formed without light.

Shadows are produced when light is ________ by opaque objects.

• Blocked

• Passed

• Stirred

Which of these is true for a shadow?

• It is of the same colour as the object.

• It shows the outline of the object.

• It depends on the position of the light source

• It shows all the details of the object.

Is this picture showing a luminous or non-luminous object?

• Luminous

• Non-luminous

Light travels in

• straight line

• curved line

• zig-zag line

• randomly

Which types of objects do not allow light to pass through them?

• Translucent

• Opaque

• Transparent

• Penumbra

Image formed by a pinhole camera is ……………….. .

• upside down

• straight

• zig-zag

A torch bulb is a luminous object.

• True

• False

All the shining bodies in sky have their own light.

• True

• False