A substance that allows light to pass through it easily is described as

The Law of Reflection states that

When beams of parallel light pass through a convex lens

The point where light beams meet is known as the _________ point?

A solar furnace uses this type of mirror to focus the sunlight on to a point

Light waves travel ___________ ___________ sound waves

The amount of light that enters your eye is controlled by

A red object looks red...

The colours of the rainbow include

The focal point of a lens can be brought closer by using

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