. If a 100-W lightbulb emits 3.0% of the input energy asvisible light (average wavelength 550 nm) uniformly in alldirections, estimate how many photons per second ofvisible light will strike the pupil (4.0 mm diameter) of theeye of an observer, (a) 1.0 m away, (b) 1.0 km away
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.
. If a 100-W lightbulb emits 3.0% of the input energy as
visible light (average wavelength 550 nm) uniformly in all
directions, estimate how many photons per second of
visible light will strike the pupil (4.0 mm diameter) of the
eye of an observer, (a) 1.0 m away, (b) 1.0 km away
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