Physics · May / June 2021 · Paper 42 · Question 6
0625
As printed in the paper
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6(a)[3]
blue ray refracted MORE towards normal at first surface
refraction away from normal at second surface
ray of blue light below ray of green light and diverging throughout path (after entering prism)
6(b)[3]
v = fλ in any form OR (f=) v / λ
(f =) 3 × 108 ÷ 4.8 × 10–7
(f =) 6.3 × 1014 Hz
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