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The Modern Atomic Theory

Question 2 • *26-27 CFISD TX-Chemistry A CR

The energy of the emitted electrons depends on the exposurefrequencyintensity of the light.

Answer
A
exposure
B
frequency
C
intensity

Explanation

In the photoelectric effect, the energy of emitted electrons depends on the light’s frequency. Increasing the frequency increases the electrons’ maximum kinetic energy, provided it is above the threshold frequency. Greater intensity mainly increases the number of electrons emitted, not their energy, so the correct choice is frequency.

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