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Question
Solution
Data: Slope = 4.1 x 10-15 V·s, e = 1.6 x 10-19 C
V0e = hv - hv0
∴ `"V"_0 = ("h"/"e")"v" - (("hv"_0)/"e")`
∴ Slope = `"h"/"e"`
∴ Planck's constant,
h = (slope)(e)
= (4.1 x 10-15 V·s)(1.6 x 10-19 C)
= 6.56 × 10-34 J.s `("as 1 V" = ("1J")/"1C")`
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