(D) All the above
(A) Globar source
(B) Xenon discharge lamp
(C) Deuterium discharge lamp
(D) Tungsten filament lamp
The given compound is acetophenone which shows maximum absorption at 230 nm. This is the base value of this compound and any phenone with a saturated alkyl group again shows same base value.
This indicates that substitution outside the chromophore doesn’t affect absorption therefore whatever the alkyl group, all the above phenones have same base value.
(A) Increase the emission wavelength spectra
(B) Re-deposit the sublimed tungsten
(C) Decrease the decomposition of the tungsten
(D) All of the above