Question

An invisible energy which causes us the sensation of sight is called _______ energy.

Answer 1

1. If you enter a dark room, the objects present in the room are not visible.
2. However, if you switch on a bulb everything in the room becomes visible.
3. It is because of light.
4. By definition, light is an invisible energy, which causes us the sensation of vision.

Hence, an invisible energy which causes us the sensation of sight is called light energy.