Question

4) What are the necessary things for the formation of a shadow ​

Answer 1

Answer:

The following three things are required for a shadow to form:

a source of light.

an opaque object.

a screen or surface behind the object.

Answer 2

Answer:

There should be an opaque material. There should be a source of light and screen. The object must be placed in the path of light.

Step-by-step explanation: