The shadow of a ball is the shape of a ______.
The shape of shadow of a circular pipe can be a rectangle.
Question 16
A torch is placed at two different positions A and B, one by one, as shown in Fig. The shape of the shadow obtained in two positions is shown in the given Fig. Match the position of the torch and shape of the shadow of the ball.
(a) Can a polyhedron have 10 faces, 20 edges and 15 vertices? Justify your answer. (b) A glowing bulb is kept above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. [4 MARKS]