What can you see in a completely dark room? If you switch on an electric bulb in this dark room as a light source, explain how you could now see:
- The electric bulb.
- A piece of white paper.
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When we see in a completely dark room, we are not able to see anything because there is no light in the dark room.
- We can see bulb due to the light emitted by the bulb.
- We can see a piece of white paper because it reflects the light from the bulb falling on it.
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