Question

The essential condition for the formation of shadow is

• A. There should be an opaque material.
• B. The object must be placed in the path of the light.
• C. All of these.
• D. There should be a source of light and screen.

Answer 1

The correct option is C All of these.

For the formation of shadow, three things must be required:

1. A source of light
2. An opaque object
3. A screen

The object must be placed in the path of the light. The object blocks the light and cast the shadow on the screen.