Question

1. A bulb is kept burning just right above the following solids. Name the shape of the
shadows obtained in each case. Attempt to give a rough sketch of the shadow.
(You may try to experiment first and then answer these questions).
0
O
A book
A ball
A cylindrical pipe
(i)
(ii)
(iii)​

Answer 1

Answer:

Hence the shadow of the circular pipe made by the light is a rectangle. Since the book is an example of a three dimensional shape cuboid its shadow is just the compression of the cuboid to its two dimensional shape rectangle. Hence the shadow of the book made by the light is a rectangle.

Answer 2

Answer:

I guess O is the answer I am not sure though