A torch is placed at two different positions A and B, one by one, as shown in Fig. 11.9.


The shape of the shadow obtained in two positions is shown in Fig. 11.10.



Match the position of the torch and shape of the shadow of the ball.

The Position “A” will form the shadow ‘a’ as shown below.


The position “B” will form the shadow ‘b’ as shown in the figure below.



The size of the shadow is bigger in ‘a’ because the screen, torch, and the ball are in the same straight line in “A”. Whereas in “B” the torch is not in line with ball and screen.


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