Question

# According to Einstein’s photon theory of light, what does the intensity of light shining on a metal determine? A. the number of photons hitting the metal in a given time interval, B. the energy of photons hitting the metal, C. whether or not photoelectrons will be emitted, D. $K E_{m a x}$ of emitted photoelectrons.

Solution

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Light intensity on metal will tell us how many photons are hitting the metal in some amount of time.

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