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Question

Assume a neutron and an electron bound to each other by gravitational force. Assuming Bohr's quantization rule. Find the expression for nth energy level.
  1. 12mev2
  2. mev2
  3. 14mev2
  4. 18mev2

A
14mev2
B
12mev2
C
18mev2
D
mev2
Solution
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mevr=nh

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