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Question

According to Bohr's theory, the angular momentum of an electron in 5th orbit is:

A
2.5h/π
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B
25h/π
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C
1.0h/π
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D
10h/π
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Solution

The correct option is A 2.5h/π
Expression for angular momentum is written as, L=nh2π.

For 5th orbit ,n=5.

L=5h2π=2.5hπ

Hence, option A is correct.

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