General Science • PhysicsMedium
What is the term for the minimum potential difference applied to a photoelectric tube that stops the emission of photoelectrons completely?
A. Threshold potential
B. Stopping potential✓ Correct Answer
C. Work function voltage
D. Saturation voltage
💡 Solution & Explanation
Stopping potential is defined as the minimum negative anode potential required to halt the emission of photoelectrons completely, reducing the photoelectric current to zero. This value depends on the frequency of incident radiation and the nature of the metal surface. Modern physics concepts like photoelectric emission are regularly tested in science sections.
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