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Electrons in a certain energy level n=n(...

Electrons in a certain energy level `n=n_(1)` can emit 3 spectral lines. When they are in another energy level, `n=n_(2)`, they can emit 6 spectral lines. The orbital speed of the electrons in the two orbits are in the ratio

A

`4:3`

B

`3:4`

C

`2:1`

D

`1:2`

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The correct Answer is:
A
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