photoelectric effect: You are given the plot below (Figure 1), without further explanation, and asked to intepret it. (a) Explain, with the aid of a schematic diagram of the experimental apparatus, what the horizontal and vertical axes refer to, what the numbers (11.2 x 1014 etc.) are, and the physics behind the trends in the I vs. V curves. 0.4 Measured Data, I vs. V 16.7 x 1014 0.3 13.8 x 1014 - 0.2- 11,2 × 1014 0.1- 0.0 -3 1 2 3. 4 V (V)
photoelectric effect: You are given the plot below (Figure 1), without further explanation, and asked to intepret it. (a) Explain, with the aid of a schematic diagram of the experimental apparatus, what the horizontal and vertical axes refer to, what the numbers (11.2 x 1014 etc.) are, and the physics behind the trends in the I vs. V curves. 0.4 Measured Data, I vs. V 16.7 x 1014 0.3 13.8 x 1014 - 0.2- 11,2 × 1014 0.1- 0.0 -3 1 2 3. 4 V (V)
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Transcribed Image Text:photoelectric effect:
You are given the plot below (Figure 1), without further explanation, and asked to intepret it.
(a) Explain, with the aid of a schematic diagram of the experimental apparatus, what the
horizontal and vertical axes refer to, what the numbers (11.2 x 1014 etc.) are, and the physics
behind the trends in the I vs. V curves.
0.4
Measured Data, I vs. V
16.7 x 1014
0.3-
13.8 x 1014
- 0.2-
11,2 x 1014
0.1-
0.0
1
2
3
V
(V)
(b) Use the plot to obtain a value for the Planck constant, h, and for any other numbers that
may be of interest. (You don't need to include uncertainties in your calculation to get full
marks, but try to treat the data in a sensible manner.) (You may use e =
1.6 x 10-19
C.)
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