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As the electron in Bohr orbit of hydroge...

As the electron in Bohr orbit of hydrogen atom passesfrom state `n = 2` to `n = 1`, the kinetic energy K and potential energy U changes as

A

K two fold, U also two fold

B

K four fold, U also four fold

C

K four fold, U two fold

D

K two fold, U four fold.

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