Q16. A proton and an electron are associated with same de-Broglie wavelength. The ratio of their kinetic energies is: (Assume $\mathrm { h } = 6.63 \times 10 ^ { - 34 } \mathrm {~J} \mathrm {~s} , \mathrm {~m} _ { \mathrm { e } } = 9.0 \times 10 ^ { - 31 } \mathrm {~kg}$ and $\mathrm { m } _ { \mathrm { p } } = 1836$ times $\mathrm { m } _ { \mathrm { e } }$ )\\
(1) $1 : \sqrt { 1836 }$\\
(2) $1 : \frac { 1 } { 1836 }$\\
(3) $1 : \frac { 1 } { \sqrt { 1836 } }$\\
(4) $1 : 1836$