1.3 x 10-15 Hz
3.1 x 1052 Hz
3.2 x 10-53 Hz
8.0 x 1014 Hz
Correct answer is D
E = hf
f = (E)/h
∴ f = (3.3 x 1.6 x 10-19)/6.6 x 10-34
= 0.8 x 1015 = 8.0 x 1014 Hz
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