Excited hydrogen atom emits light in the...

Excited hydrogen atom emits light in the ultra violet region at `2.47 xx 10^(15)` Hz. With this frequency, the energy of a single photon is (Given: `h = 6.63 xx 10^(-34) J s`)

`8.041 xx10^(-40) J`

`2.680 xx 10^(-19) J`

`1.640xx10^(18) J`

`6.111xx10^(-17) J`

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The correct Answer is:

`E=hv =(6.63xx10^(-34) Js) (2.47xx10^(15) s^(-1))=1.64xx10^(-18) J`

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