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A gas absorbs a photon of 355 nm and em...

A gas absorbs a photon of ` 355 nm` and emits at two wavelengths . If one of the emission is at ` 6 80` nm , the other is at :

A

1035 nm

B

325 nm

C

743 nm

D

518 nm

Text Solution

Verified by Experts

The correct Answer is:
C
`E_("total") = E_1 + E_2`
`(hc)/(lambda) = (hc)/(lambda_1) + (hc)/(lambda_2) rArr (1)/(lambda) = (1)/(lambda_1) + (1)/(lambda_2)`
`(1)/(353 ) = (1)/(680) + (1)/(lambda_2)`
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