In Bohr model of hydrogen atom

Moderate

A

the radius of n^th orbit is proportional to n2
B

the total energy of electron in n^th orbit is proportional to n
C

the angular momentum of the electron in an orbit is an integral multiple of h /2 $π$
D

the magnitude of the potential energy of an electron in any orbit is greater than its kinetic energy

Solution

$r_{n} = \frac{n^{2} h^{2} ε_{0}}{{πme}^{2}} r_{n} \propto n^{2} mvr = nh / 2 π Angular momentum is integral multiple of h / 2 π) K.E. = \frac{{me}^{4}}{8 n^{2} h^{2} ε_{0}^{2}} and P.E. = - \frac{{me}^{4}}{8 n^{2} h^{2} ε_{0}^{2}} ∣ P.E. | > | K.E. ∣$

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