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Sound travels ~4Ć faster in water than in air ā about 1,480 m/s vs 343 m/s.
Did you know?
Sound travels ~4Ć faster in water than in air ā about 1,480 m/s vs 343 m/s.
The number of photons per second on an average emitted by the source of monochromatic light of wavelength nm, when it delivers the power of watt will be: Js
To solve this problem, we need to find the number of photons emitted per second by a source of monochromatic light.Given:⢠Wavelength nm
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