The wavelength of radiation emitted ${\mathrm{\lambda }}_{0}$ when an electron jumps from the third to the second orbit of hydrogen atom. For the electron jump from the fourth to the second orbit of the hydrogen atom, the wavelength of radiation emitted will be
(a) $\frac{16}{25}{\mathrm{\lambda }}_{0}$                     (b) $\frac{20}{27}{\mathrm{\lambda }}_{0}$
(c) $\frac{27}{20}{\mathrm{\lambda }}_{0}$                     (d) $\frac{25}{16}{\mathrm{\lambda }}_{0}$

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