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Find energy of photons which corresponds...

Find energy of photons which corresponds to light of frequency `3 xx 10^(12) Hz`

A

`9.1878xx10^(21) J`

B

`8.9178xx10^(21) J`

C

`1.9878xx10^(21) J`

D

`1.7898xx10^(21) J`

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