$A$ difference of $5.4 \ eV$ separates two energy levels in an atom. What is the frequency of radiation emitted when the atom makes a transition from the upper level to the lower level? (Take $1 \ eV = 1.6 \times 10^{-19} \ J$,$h = 6.625 \times 10^{-34} \ Js$)
- A$5.6 \times 10^{14} \ Hz$
- B$1.304 \times 10^{15} \ Hz$
- C$5.6 \times 10^{15} \ Hz$
- D$1.304 \times 10^{14} \ Hz$
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