Question

According to Bohr’s theory, the angular momentum for an electron of third orbit is?

• A. \( \frac{h}{2\pi} \)
• B. \( \frac{3h}{2\pi} \)
• C. \( \frac{h}{\pi} \)
• D. \( \frac{2h}{\pi} \)

Hint:

Bohr's theory quantizes the angular momentum of electrons as \( L = \frac{nh}{2\pi} \).

Answer 1

The Correct Option is B

According to Bohr’s theory, the angular momentum of an electron in the nth orbit is quantized and given by: \[ L = \frac{nh}{2\pi} \] For the third orbit, \( n = 3 \), so the angular momentum is \( \frac{3h}{2\pi} \).