Question

A bird flying high in the sky does not cast its shadow on the ground.

• A. True
• B. False

Answer 1

The correct option is A True

Drawing the diagram of the situation:

1. Umbra is the region of total darkness and penumbra is the region of partial darkness.
2. When the bird flies high in the sky, the umbra is absent and the penumbra is too large and too faint that it is not visible.
3. When the bird flies high in the sky, the distance between the bird's body and the surface of the earth is very large.
4. If the light is obstructed by the bird's body it will not be able to cast a shadow due to such a large distance. Therefore, birds flying high in the sky do not cast their shadows.

Hence, the statement of the question is true.