Energy of light is proportional to its frequency.So if light loses energy on reflecting off a surface then why doesn't it change its colour?
Answer
Energy of light is proportional to its frequency.
The energy of a photon is proportional to its frequency.
The power of a light beam is determined by the photon energy and the number of photons it delivers per unit time.
So if light loses energy on reflecting off a surface then why doesn't it change its colour?
An imperfect reflector causes the light beam to lose energy by absorbing some of the photons, not by changing the energy of each reflecting photon.
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