science
Grade6
Easy
Question
Which of the following is luminous?
- Moon
- An open window
- A torch
- A pen
Hint:
- Luminous objects are those which emit light on their own.
- Examples: - Sun, flame of a burning candle.
The correct answer is: A torch
- Luminous objects are those which emit light on their own.
- Examples: - Sun, flame of a burning candle
- Non-luminous objects are those which can not emit light on their own. These objects reflect light from luminous bodies.
- Examples: - Moon, Earth
- Moon, Open window and a pen does not have their own light so they are non luminous.
- In order to emit light by the object it must have its own source of energy. A torch shines because of the chemical energy stored in its batteries.
- So answer is torch
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