Question

A uniform magnetic field b exists in a region. An electron of charge q and mass m moving with velocity v enters the region in a direction perpendicular to the magnetic field. Considering Bohr angular momentum quantization, which of the following statement(s) is/are true?

• A. The radius of n^m orbit $r_n$∞$\sqrt n$
• B. The minimum velocity of the electron is $\sqrt{\frac{qBℏ}{m}}$
• C. The energy of the nth level En∞n
• D. Transition frequency ω between two successive levels is independent of n.

Answer 1

Answer: (A), (B), (C), (D)

The radius of n^m orbit $r_n$∞$\sqrt n$

Answer 2

The correct answer is/are option(s):
(A): The radius of n^m orbit $r_n$∞$\sqrt n$
(B): The minimum velocity of the electron is $\sqrt{\frac{qBℏ}{m}}$
(C): The energy of the nth level En∞n
(D): Transition frequency ω between two successive levels is independent of n.