First slide

Bohr Model of the Hydrogen atom.

Question

According to Bohr's theory of hydrogen atom, the angular momentum of an electron in any orbit of hydrogen atom is

Easy

A

directly proportional to the radius of the orbit
B

inversely proportional to the radius of the orbit
C

directly proportional to the square of the radius of the orbit
D

directly proportional to the square root of the radius of the orbit

Solution

Angular momentum
$m \lor r = n (\frac{h}{2 π})$
where $r \propto n^{2} or \sqrt{r} \propto n$
$Angular momentum \propto \sqrt{r}$

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