Physics (AS & A Level) · May / June 2017 · Paper 42 · Question 10
9702
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10(a)[2]
10(b)(i)[1]
10(b)(ii)[4]
1. intercept = 1 / λ0 = 2.2 × 106m–1 λ0 = 4.5 × 10–7 m or 450 nm 2. gradient = hc gradient = 2.0 × 10–25 or correct substitution into gradient formula h = (2.0 × 10–25) / (3.0 × 108) = 6.7 × 10–34 J s
10(c)[2]
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