Question Detail

PHY 104 Photo Electric Emission Objective Question
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Question

Thermionic emission, discovered by Edison, is the emission of electrons from a metal under what condition?
Options
A When exposed to light of a certain frequency.
B When struck by high-energy photons.
C When it is heated.
Correct Answer
D When subjected to a strong electric field.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 6, under 'Thermionic emission', states: 'The emission of electrons from a metal when it is heated - discovered by Edison'.

Hint

The term 'thermionic' itself suggests heat.

Question Info

Course: PHY 104
Topic: Photo Electric Emission
Type: Objective
Difficulty: Not specified
Question 218 of 947
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