Question

Which property of light is helpful in shadow formation

Answer 1

$rectillinear \: propogation \: of \: light. \\ because \: of \: light \: can \: travel \: straight \: therefore \: any \: obectcoming \: in \: betweens \: shadww \: is \: casted$

Answer 2

Hey mate, here is your answer ☺️❤️❤️☺️

The light is an opaque object, so, it forms a shadow when hitting with light.

Hope it helps u dear ✔️✔️✌️✌️