Question

state the condition necessary for shadow formation​

Answer 1

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. Then shadow is formed on the screen

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. Then shadow is formed on the screen.