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PHY 104 PHY 104 Past Questions Objective Question
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Question

The work function of platinum is twice that of the work function of calcium. If the minimum photon energy required to emit photoelectrons from the surface of platinum is E, then the minimum photon energy required for the surface of calcium would be
Options
A 2E
B 3E/2
C E/2
Correct Answer
D Cannot be determined.
Correct Answer

Option C is the correct answer.

Detailed Explanation

The minimum photon energy required is the work function. If φ_Pt = 2φ_Ca, and E = φ_Pt, then φ_Ca = E/2.

Hint

The minimum photon energy is the work function.

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 840 of 947
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