Question
Who discovered infrared
rays?Solution
Infrared rays were discovered in 1800 by William Herschel, a British astronomer and composer. He identified these rays while exploring the spectrum beyond the red part of visible light, revealing a type of radiation that is invisible to the eye but detectable as heat.
Which type of mirror is utilized in solar furnaces to focus sunlight and generate heat?
Heat stored in water vapour is –
The acceleration due to gravity ___________ with height
What is the cause of hypermetropia?
A ray of light from the object parallel to principal axis of a concave lens, after refraction appears to diverge from which point on the same side of th...
Which of the following is the least penetrating power rays ?
Which of the following wind is also known as “ICE HEATER?”
When two charged bodies are properly connected but do not exchange electric current, it indicates that they have the same _____.
What term describes the resistance of an object to changes in its state of motion or rest?
Water gets cooled, when ice is immersed in it. It is because of the phenomenon of
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