Use the correct word to complete the sentence: Normal        Less than        Equal to        Greater than        Odd        20        40

At a plane mirror, the angle of incidence is __________________ the angle of reflection. 

Use the correct word to complete the sentence: Normal        Less than        Equal to        Greater than        Odd        20        40

When the angle of incidence is 20 degrees, the angle of reflection is ________________ degrees.

Use the correct word to complete the sentence: Normal        Less than        Equal to        Greater than        Odd        20        40

The line that is drawn at an angle of 90 degrees to the mirror is called the ___________  line.

A pupil is observing the behaviour of a woodpecker. He uses a periscope to look over a wall at a tree, and waits for the bird to land on the trunk.

The pupil can only watch one part of the tree trunk at a time.

Which point on the tree trunk can he see using the periscope (in the position shown)? 

• Point A

• Point B

• Point C

• Point D

• Point E

Which diagram shows the correct path of light between the pupil's eye and the tree?

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