Question

An object is placed in between a light source and a screen. Which of the following statements are true?

• A. A shadow is formed, if it completely allows light to pass through it.
• B. A shadow is formed, if it bounces back all the light.
• C. A shadow is formed, if it absorbs all the light.
• D. A shadow is formed, if it either transmits or absorbs the light.

Answer 1

Answer: (B), (C)

The correct options are
B A shadow is formed, if it bounces back all the light.
C A shadow is formed, if it absorbs all the light.

A shadow of an object is formed on a screen when the object blocks the path of light. Opaque objects, such as trees, completely block light and form a dark shadow. Translucent materials, such as butter-paper, partially allow light to pass through, which scatters and creates a faint shadow. Transparent objects, such as glass, do not create a shadow because all the light that falls on them will completely pass through them.