Question: A red laser pointer emits a red beam of P 1 mW power at the 635 nm wavelength. What are the photon energy, the photon

A red laser pointer emits a red beam of P 1 mW power at the 635 nm wavelength. What are the photon energy, the photon momentum, and the photon flux of this beam? If it illuminates a totally absorbing surface, what is the force exerted by the beam on the absorbing surface? If it illuminates a totally reflecting surface, what is the force exerted by the beam on the reflecting surface

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