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Question

What should be the angular momentum of an electron in Bohr's hydrogen atom where energy is $$-0.544$$.


A
hπ
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B
3h2π
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C
5h2π
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D
2h2π
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Solution

The correct option is A $$\displaystyle\frac{h}{\pi}$$
Angular momentum of nth orbit R given by 
$$L_{n} = \dfrac{nh}{2\pi }$$
The angular momentum of an electron when energy is - 0.544, 
$$L_{2} = \dfrac{2h}{2\pi }$$

 $$ L = \dfrac{h}{\pi}$$

Physics

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