Home Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect Work function of a metal is 2.1 eV. Which of…
Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect MCQ (Single Correct)

Work function of a metal is 2.1 eV. Which of the waves of the following wavelengths will be able to emit photoelectrons from its surface

A
4000 Å, 7500 Å
B
5500 Å, 6000 Å
C
4000 Å, 6000 Å
D
None of these

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The correct answer is:
D

Threshold wavelength

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