A light source emits a beam of photons, each of which has a momentum of 2.0 x 10-29 kg-m/s. (a) What is the frequency of the photons? (b) To what region of the electromagnetic spectrum do the photons belong? (a) Number (b) i Units

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Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.