Photoelectric emission occurs only when

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Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

Photoelectric emission occurs only when the incident light has more than a certain minimum

Options:

Intensity

Angle of Incidence

Speed

Frequency

Correct Answer:

Frequency

Explanation:

The correct answer is Option (4) → Frequency

Energy of the incident light should be greater than work function of the metal

$\phi>\phi_0$

$h \nu>h v_0$

$h>v_0$