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Atomic and Nuclear Physics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsAtomic and Nuclear Physics1 Mark
MCQ
In the lowest energy level of hydrogen atom, the electron has the angular momentum
  • A
    $\pi / h$
  • B
    $h / \pi$
  • ✓
    $h / 2 \pi$
  • D
    $2 \pi / h$
✓

Answer

Correct option: C.
$h / 2 \pi$
$m v r=\frac{n h}{2 \pi}$, for $n=1$ it is $\frac{h}{2 \pi}$

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