In question number 70 , what is the frequency of photon? \( \mathrm{P} \) (a) \( 3.1 \times 10^{...

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In question number 70 , what is the frequency of photon?
\( \mathrm{P} \)
(a) \( 3.1 \times 10^{15} \mathrm{~Hz} \)
(b) \( 3.1 \times 10^{18} \mathrm{~Hz} \)
W
(c) \( 9.1 \times 10^{15} \mathrm{~Hz} \)
(d) \( 9.1 \times 10^{18} \mathrm{~Hz} \)
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