A photon of 400 nm is absorbed by a gas molecule and then the molecule re-emits two photons. One re-emitted photon has wavelength 500 nm. Assuming that there is no change in the energy of molecules, the wavelength of second re-emitted photon is:

A photon of 400 nm is absorbed by a gas molecule and then the molecule

1.	A photon of 400 nm is absorbed by a gas molecule and then the molecule re-emits two photons. One re-emitted photon has wavelength 500 nm. Assuming that there is no change in the energy of molecules, the wavelength of second re-emitted photon is:
Answer» A photon of $400 nm$ is absorbed by a gas molecule and then the molecule re-emits two photons. One re-emitted photon has wavelength $500 nm$ . Assuming that there is no change in the energy of molecules, the wavelength of second re-emitted photon is: