A shadow is obtained only on a...
Answers
Answer:
screen
Explanation:
Answer:
Demonstrate the activity of a shadow is obtained only on a screen.
An activity to demonstrate that shadow can only be obtained on a screen -:
This is an activity that you will have to do in the dark. In the evening, go out in an open ground with a few friends. Take a torch and a large sheet of cardboard with you. Hold the torch close to the ground and shine it upwards so that its light falls on your friend's face. You now have a source of light that is falling on an opaque object. If there were no trees, buildings, or any other object behind your friend, you will not see the shadow of your friend's head. This does not mean that there is no shadow. After all, the light from the torch is not able to pass through his body to the other side. Now, ask another friend to hold the cardboard sheet behind your friend. Now the shadow is seen on the cardboard sheet. Thus, the shadow can be seen only on a screen.