CAPE Physics Unit 2 · 2014 · Paper 1 · Question Q35
An experiment to investigate the photoelectric effect was performed and a graph showing the energy of photoelectrons versus frequency of incident radiation plotted as shown below.
If e is electronic charge, V_s is stopping potential, f is the frequency, m is the mass of an electron and h is the Planck constant, then the gradient of the graph is
- (A)
h - (B)
e/m - (C)
hm/e - (D)
h/e
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