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Excited hydrogen atom emits light in the ultraviolet region at $\;2.47 \times 10^{15}\;Hz\;$.With this frequency , the energy of a single photon is :$\;(h=6.63 \times 10^{-34}\;Js) $

$(a)\;8.041 \times 10^{-40}\;J\qquad(b)\;2.680 \times 10^{-19}\;J\qquad(c)\;1.640 \times 10^{-18}\;J\qquad(d)\;6.111 \times 10^{-17}\;J$

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