Question

Take four balls of equal size of different colours. Try to form a shadow of each ball as shown in fig. Ask your friend who is facing the screen and not able to see the balls to guess the colour of.

i) Is your friend able to guess the colour of the ball correctly?

ii) Is it possible to guess the colour of the object by observing it’s shadow? If not why?

Answer 1

i) No, he not able to guess the colour.

ii) No, its not possible to guess the colour of the object by observing its shadow. Because any colour of object forms only dark shadows. A shadow is an area/where light is absent. Hence, the shadow is colourless irrespective of the colour of the object.