Question

The color of the shadow of the green ball is:
A.) Red
B.) Black
C.) Blue
D.) Green

Answer 1

Hint: Study about the phenomena of shadow formation and try to determine what concept is used in this particular question. Shadow is formed only when an opaque object comes in front of light rays. Try to see which of the above objects is opaque.

Complete step by step answer:
Shadow can be defined as a dark shape formed by blocking the light rays coming from a source by an opaque object.

The color of the shadow of any object is always black. Since, shadow is formed by blocking all the light rays by an opaque object in the region of the shadow there will be no light. So, we don’t see anything in that shape and the color of the shadow region will be black.

Even if the object is colourful, the shadow is formed by blocking the incoming light. So, there is no relation between the color of the object and the shadow. Hence, the color of the shadow is always black irrespective of the color of the object.

Here also, the color of the shadow of the green ball will be black.

The correct option is (B).

Note: We see color because of the absorption and reflection of light by objects.
Every material can absorb certain frequencies of light and reflect the others. Hence, we see light of particular wavelength and hence different colors. If all wavelengths of light are reflected by the material, we will see the object as white and if all the wavelengths of light is absorbed by the material, we will see the object as black.