Question Detail

PHY 104 Photo Electric Emission Objective Question
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Question

In the context of the Photoelectric Effect, what does 'f-co' (frequency cutoff) signify?
Options
A The frequency at which the current is maximized.
B The frequency of light above which no electrons are emitted.
C The frequency of light below which no electrons are emitted.
Correct Answer
D The frequency corresponding to the maximum kinetic energy of electrons.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 3 mentions 'Hence, the existence of f-co. (f-co = frequency cutoff)' and page 4 defines 'THRESHOLD FREQUENCY' as 'the frequency minimum frequency that produce photoelectron emission instantaneously from a given substance.' This implies that below this frequency, no electrons are emitted.

Hint

Consider the condition for electron emission and the 'threshold' concept.

Question Info

Course: PHY 104
Topic: Photo Electric Emission
Type: Objective
Difficulty: Not specified
Question 221 of 947
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