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A photon of 300 nm ios absorbed by a ga...

A photon of ` 300 nm` ios absorbed by a gas and then re-emits two photons . One re-emitte photon has wavelnght ` 4967 nm`, the wavelength fo second re-emitte photon is :

A

` 757`

B

` 857`

C

` 957`

D

` 657`

Text Solution

Verified by Experts

The correct Answer is:
A
`E_("photon absorbed") = E_1 + E_2 ("Energy releasesd") `
or `( hc)/( lambda) = ( hc)/( lambda_1) + ( hc)/( lambda_2)` or `(1)/ (lambda ) = 1/(lambda _(1)) + (1)/ ( lambda_(2))`.
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P BAHADUR-ATOMIC STRUCTURE-Exercise 3A
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