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A H–atom in ground state has time period...

A H–atom in ground state has time period `T = 1.6 xx 10^(–16)` sec. find the frequency of electron in first excited state

A

` 7.8 xx 10 ^( 14 ) `

B

` 1.6 xx 10 ^( 14 ) `

C

` 5.6 xx 10 ^( 12 ) `

D

` 6.2 xx 10 ^( 15)`

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