Question Detail

PHY 104 Photo Electric Emission Objective Question
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Question

How can Planck's constant (h) be determined using the Vstop versus frequency (f) graph for the photoelectric effect, according to the document?
Options
A By measuring the y-intercept of the graph.
B By calculating the area under the curve.
C By taking the ratio of the slope of the graph to the elementary charge (e).
Correct Answer
D By extrapolating the graph to infinite frequency.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 5 states that the Vstop vs f graph has a slope of (h/e), and that 'This gives a second way of determining the value of h.' Therefore, h can be determined by multiplying the measured slope by the elementary charge e.

Hint

Recall the re-written equation for Vstop and the significance of the slope of the Vstop vs. f graph on page 5.

Question Info

Course: PHY 104
Topic: Photo Electric Emission
Type: Objective
Difficulty: Not specified
Question 206 of 947
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