Asked by myles

a very bright source of red light has much more energy than a dim source of blue light, but the red light has no effect in ejecting electrons from a certain photosensitive surface. why is this so?
Answered by bobpursley
you used "bright" and "dim" This means the rate of photon emission, not individual photon energy. Blue photons are individually much more energeticthan red photons.
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