Physics, 02.10.2019 02:00 wirchakethan23

Choose the answer that explains the photoelectric effect.

metallic plates emit protons only when light of a certain minimum frequency shines on them.
metallic plates emit electrons when the cumulative effect of light causes electron movement.
metallic plates emit electrons only when light of a certain maximum frequency accumulates energy.
metallic plates emit electrons only when light of a certain minimum frequency shines on them.

taylor's experiment:

accurately measured the speed of light
locked together the phases of two light sources so that the interference pattern would not shift
showed that man's reaction time was much slower than the speed of light
showed that individual photons have wave characteristics

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Choose the answer that explains the photoelectric effect.

metallic plates emit protons o...

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