The electrons are emitted in the photoelectric effect from …

Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect MCQ (Single Correct)

The electrons are emitted in the photoelectric effect from a metal surface

Only if the frequency of the incident radiation is above a certain threshold value

Only if the temperature of the surface is high

At a rate that is independent of the nature of the metal

With a maximum velocity proportional to the frequency of the incident radiation

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The correct answer is:

Electrons are emitted from the surface of a metal when its exposed to light. This is called photoelectric effect. Each metal has a certain threshold frequency of light when an electron is emitted. Above this frequency, the electron is emitted and the extra energy is transferred to the electron.

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