In a hydrogen like atom, when an electron jumps from the M-shell to the L-shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from N-shell to the L-shell, the wavelength of emitted radiation will be:\\
(1) $\frac { 27 } { 20 } \lambda$\\
(2) $\frac { 16 } { 25 } \lambda$\\
(3) $\frac { 25 } { 16 } \lambda$\\
(4) $\frac { 20 } { 27 } \lambda$