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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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Knowledge Check

  • A gas absorbs a photon of 355 nm and emit at two wavelengths. If one of the emission is at 680

    A
    325 nm
    B
    743 nm
    C
    518 nm
    D
    1035 nm

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

    A
    ` n= 4 , l=1`
    B
    ` n = 4, l=0`
    C
    ` n = 3, 1=2`
    D
    `n= 3, l=1`

  • A gas absorbs a photon of 310nm and emits three photons. If energy of emitted photons is in the raio 1:2:1 then select correct statement(s) :

    A
    The wave length of emitted photons is in the ratio `1: 2:1`
    B
    The wave length of emitted photons is in the ratio `2:1:2`
    C
    The wave length of emitted photons is in the ratio `1240 nm`.
    D
    The wavelength of least energatic photon is `1310 nm`.

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