We all heard this word. Do you know what is shadow? If you don’t know, let’s do an activity.
Activity
Take a torch, ball and screen. Place torch on table, place ball between torch and screen. Now on a torch, firstly light falling on ball and ball is opaque object so it does not pass light through it. So light will be falling on screen by edges of ball. At the center of screen formed dark image, that dark image nothing but a shadow.
A dark shape on a surface that is caused by something being between the light and that surface is called shadow.
Kept your hand between ground surface and sunlight, and observe an image found on a
surface.
Q. 1 What will happen if transparent material is used instead of opaque object?
Ans : If we used transparent material instead of opaque object then there is
no shadow formed, because transparent material passes light through it.