Which one of the following is true in photoelectric emissio…

Physics Electron, Photon, Photoelectric Effect and X-rays Einstein Photoelectric Equation: Energy Quantum of Radiation MCQ (Single Correct)

Which one of the following is true in photoelectric emission?

Photoelectric current is directly proportional to the amplitude of light of a given frequency.

Photoelectric current is directly proportional to the intensity of light of a given frequency above threshold value.

Above the threshold frequency, the maximum K.E. of photoelectrons is inversely proportional to the frequency of incident light.

The threshold frequency depends upon the wavelength of incident light.

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The correct answer is:

For threshold frequency,

where

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