Home Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect Einstein's photoelectric equation states tha…
Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect MCQ (Single Correct)

Einstein's photoelectric equation states that . In this equation, refers to

A
kinetic energy of all ejected electrons
B
mean kinetic energy of emitted electrons
C
minimum kinetic energy of emitted electrons
D
maximum kinetic energy of emitted electrons

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The correct answer is:
D

refers to maximum kinetic energy of emitted electrons. The energy of photon absorbed is used in doing work against forces of attraction and imparting kinetic energy to electron.

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