science
Grade6
Easy

Question

Which of the following is luminous?

  1. Moon
  2. An open window
  3. A torch
  4. A pen

hintHint:

  • 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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