A wave has a frequency of 3 xx 10^(15) s...

A wave has a frequency of `3 xx 10^(15) sec^(-1)`. The energy of that photon is

`1.6 xx 10^(-12)` erg

`3.2 xx 10^(-11)` erg

`2.0 xx 10^(-11)` erg

`3 xx 10^(15)` erg

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