6 Questions
What is a natural source of light?
Sun, stars, Jugnu (glow-worm)
Give examples of artificial sources of light.
Glowing electric bulb, lighted torch, burning fire, burning candle, burning kerosene oil lamp, heated bodies
What is the full form of LASER?
Light Amplification by Stimulated Emission of Radiation
Define luminous bodies.
Bodies that emit light on their own, such as the sun, stars, electric lamp, etc.
What are non-luminous bodies?
Bodies that do not emit light on their own, like the moon, a book, a chair, etc.
How can a non-luminous body be made luminous?
By heating it to 525°C or more
Test your knowledge about sources of light, including natural sources like the Sun and stars, as well as artificial sources like light bulbs. Learn about the classification of sources of light into natural and man-made categories.
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