Question

Three torches A, B and C shown in fig. are switched on one by one. The light from which of the following torch will not form a shadow of the ball on the screen?
[2 marks]

Answer 1

• Shadow is formed when the light from a source is blocked by an object. Another must condition for the formation of a shadow is the presence of a screen. [1 mark]
  
• Since light always travels in a straight path, the light from torch C will not reach the displayed screen and hence no shadow will be formed. [1 mark]