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An electrons of a stationary hydrogen at...

An electrons of a stationary hydrogen aton passes form the fifth enegry level to the ground level. The velocity that the atom acquired as a result of photon emission will be
`(m` is the mass of the electron, `R`, Rydberg constanrt and `h`, Planck's constant)

A

`(24hR)/(25m)`

B

`(25hR)/(24m)`

C

`(25m)/(24hR)`

D

`(24m)/(25hR)`

Text Solution

Verified by Experts

The correct Answer is:
A
Accroding to Rhdberg formula `(1)/(lambda) = R [(1)/(n_(f)^(2))-(1)/(n_(i)^(2))]`
Here, `n_(f) =1 n_(i) =5`
Then `(h)/(lambda)=mv`
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NARAYNA-ATOMS -EXERCISE -3
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  9. An electron in the hydrogen atom jumps from excited state n to the gro...

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  11. The electron in hydrogen atom makes a transition n(1)ton(2) where n1 a...

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