Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following combinations correctly describe the processes by which electrons can be emitted from a metal surface?
A
Thermionic emission and photoelectric effect
B
Cold emission and thermionic emission
C
Photoelectric effect and thermal conduction
D
Thermionic emission and nuclear fission
Correct Answer
Option A
Detailed Explanation
Thermionic emission involves heating the metal to release electrons, while the photoelectric effect involves light providing energy to free electrons, both allowing for electron emission from the metal surface.
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