A gas absorbs a photon of 355 nm and emits at two wavelengths If one of the emissions is at - Chemistry -

Question

A gas absorbs a photon of 355 nm and emits at two wavelengths If
one of the emissions is at 680 nm,the other is at ???

Anuradha Puri · Accepted Answer

We know,
E = hcλWhereE is energyh is Planck's constantc is speed of lightλ is wavelength

According to law of conservation of energy,
hc355  = hc680+ hcλ2Therefore,680 - 355355 x 680=1λ2λ2 = 742
77 nm
= 743 nm

A gas absorbs a photon of 355 nm and emits at two wavelengths.If one of the emissions is at 680 nm,the other is at ???