If an {e}^{-} is revolving in the first bohr orbit of a {H} -atom with a velocity of 2.19 \\times10^{8} {cms}^{-1},what will be the velocity of the {e}^{-} in the third orbit of {H} -atom?

Correct Answer is : 7.3×107cms−1

UPSEE 2018 Solved Paper

Question : 55 of 150

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If an e− is revolving in the first bohr orbit of a H -atom with a velocity of 2.19×108cms−1,what will be the velocity of the e− in the third orbit of H -atom?

2.19×108cms−1
7.3×107cms−1
6.57×108cms−1
1.09×108cms−1

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