1) An object is 15.0 cm in front of a plane mirror. If this object is then moved a further 10.0 cm away from the mirror, what will be the distance between the image and the object?

2) A plane mirror mounted on wheels is pushed towards a girl at a speed of 3.0 m s^-1.

If the girl stands still, she will see her image moving

3) The angle of reflection is defined as

4) In a game of hide and seek, Natalie can only see one of her friends hiding behind a wall via a reflection from a mirror. The diagram below shows the top views of Natalie, each of her friends' positions shown by a cross x, and the walls.

5) A light ray is incident normally on a mirror as shown below.

The angle of reflection for the ray will be