Q206 / 240 · KCET 2026 · Physics

Bohr's second postulate implies quantisation of

A
Charge of an electron
B
Energy of an electron
Correct answer
C
Angular momentum of electron
D
Radiated energy by an electron

Solution

According to Bohr's second postulate, an electron can revolve only in those circular orbits where its angular momentum is an integral multiple of $\dfrac{h}{2\pi}$.

Mathematically, $L = mvr = \dfrac{nh}{2\pi}$, where $n = 1, 2, 3, \dots$

This postulate directly implies the quantisation of the angular momentum of an electron.

Answer: Angular momentum of electron

Hence, the correct answer is option: 'C'.

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