Objects that do not emit light of their own are called

Light can travel in a zig-zag way.

Bouncing back of light from a smooth surface is called

It is always black, regardless of the colour of the object. What is it?

------------- objects form a shadow.

The condition required for the formation of a shadow?

The pinhole camera forms an inverted image of the object.

Moon is a ---------- object.

Which is a man-made luminous object?

Objects which do not allow light to pass through them are called

The nature of the size of the shadow depends on  

Which of these will not form a shadow?

Which of these is not a part of a pinhole camera?

An image has