1) 2023 S4 EOY P1 Q11

In the diagram below, the angle of incidence of a light ray on a horizontal plane mirror is 30º.

What is the angle of reflection if the mirror is rotated anti-clockwise through an angle of 20º?

2) An eye views an object O by reflection in a plane mirror.

Which is the correct ray diagram?

3) Which of the following statements is one of the laws of reflection?

4) 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

5) A girl at X looks through a periscope at a mountain far away.

Which of the following descriptions about the final image of the mountain formed is/are true?

(1) The final image is laterally inverted.

(2) The final image is upright.

(3) The final image is diminished.