Questions on Light
Q2. The diagram shows a lighthouse on a rock. It is night-time and there are boats at A, B, C, D and E moored in the water.
(a) On which boat, A, B, C, D or E, would the light from the lighthouse be brightest?
1 mark
(b) Each boat makes a shadow on the water.
(i) Draw a cross (X) on the diagram to show where the shadow of boat A will be.
1 mark
(ii) Explain why the shadow forms there.
1 mark
(c) The weather changes and the fog horn on the lighthouse makes a loud sound. On which boat, A, B, C, D or E, would the sound of the fog horn be quietest?
1 mark
(d) Inside the lighthouse there is a powerful lamp and some mirrors. The diagram shows the lamp and a mirror. A ray of light from the lamp is shown. Carefully draw the ray which is reflected from the mirror. Use a ruler.
2 marks
Maximum 6 marks