Question

Photo dissociation of carbon monoxide molecule occurs with a minimum energy of 11 eV. This can be made possible by impinging following electromagnetic radiation.

• A. Ultraviolet light
• B. Red - yellow visible light
• C. Infrared light
• D. Microwaves

Answer 1

The correct option is A Ultraviolet light

$\frac{hc}{\lambda }=11eV$
$hc\approx 1240eV-nm$
$\Rightarrow \lambda =\frac{1240}{11}nm$
$=112\times {10}^{-9}m$
$=1.12\times {10}^{-8}m$
Which is in ultraviolet region of spectrum