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A gas absorbs photon of 355 nm and e...

A gas absorbs photon of 355 nm and emits two wavelength if one of the emission is at 680 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= hv = (hc )/(lambda)`
`(hc)/(lambda) = (hc )/(lambda) + (hc)/( lambda_(2))`
`(1)/(355) =(1)/(680) + (1)/(lambda)`
`=(680)/(355) xx (355)/( 680)`
`lambda_(2) = (355 xx 680)/( 325) = 742 .769 = 743 nm`
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