A light source of wavelength illuminates a metal surface and electron are ejected with the maximum kinetic energy 2 eV. If the same surface is illuminated by a light source of wavelength
, then calculate the maximum kinetic energy of the ejected electron. (Work function of metal is 1 eV)
For the photoelectric effect, the maximum kinetic energy of emitted electrons is given by (K_{\max} = h\nu - ___ _____ ________ ____ _________ ____ _________.
__________ ________ __________ __________ ________ ________ ______ __________ __________ ___ ___ ____.
______ ______ _____ ______ _______ __________ ________ ___ ___ ___.
____ ___ ___ ____ __________ ___.
__________ ___ ____ ______ ____ ______ __________ _______ ___ __________ ______.
_____ _____ _______ ________ ____ __________ ________.
__________ ______ __________ ______ __________ _____ ________ _____.
______ _________ _________ ________ __________ __________ ________ ____ ______.
___ _______ ___ ______ ________ ____ ___.
________ ________ ____ _____ ___ _________ _______ _______ _______.
_______ ____ ____ ___ _________ _________ ________.
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The molecule has 3 fundamental vibrational frequencies. One is Raman active and two are IR active. Identify the structure of the molecule.
Write short notes on the following.
Raman rotational spectra of was observed with Hg light with Rayleigh line at
. Stokes lines were observed at
. Draw the rotational energy level diagram with Stokes and anti Stokes lines.
Electronic transitions are called vertical transitions. Comment.
Explain why the atomic spectra are line spectra whereas the molecular spectra are band spectra.
The frequencies of the first and second overtones respectively are exactly double and triple of the fundamental vibration frequency. Comment.
What are different mechanisms that contribute to the relaxation of nuclear spins in the excited state? Explain any one of them.