When red light strikes a metal surface, it is observed that electrons are ejecte

Question

When red light strikes a metal surface, it is observed that electrons are ejected from the metal. When violet light is used instead, with the same power (energy per second) as the red light:

a) there are more electrons per second, with a higher maximum kinetic energy

b) there are less electrons per second, with a higher maximum kinetic energy

c) there are more electrons per second, with a lower maximum kinetic energy

d) there are less electrons per second, with a lower maximum kinetic energy

e) none of the above answers are correct

Explanation / Answer

The frequency of the violet light is greater than the frequency of the red light. However, the power is same means the no. of photons falling on the metal surface is same. So no. of electrons ejected would remain same but with high kinetic energy.

Hence None of the above answers is correct.

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