A) \[{{n}_{1}}>{{n}_{2}}\]
B) \[{{n}_{1}}<{{n}_{2}}\]
C) \[{{n}_{1}}={{n}_{2}}\]
D) Can't say anything
Correct Answer: A
Solution :
Power \[=\frac{energy}{time}=\frac{\left[ {{n}_{1}}\left( \frac{hc}{{{\lambda }_{1}}} \right) \right]}{\Delta t}=\frac{\left[ {{n}_{2}}\left( \frac{hc}{{{\lambda }_{2}}} \right) \right]}{\Delta t}\]\[\Rightarrow \]\[\frac{{{n}_{1}}}{{{\lambda }_{1}}}=\frac{{{n}_{2}}}{{{\lambda }_{2}}}\]As\[\frac{{{\lambda }_{1}}}{{{\lambda }_{2}}}>1\] \[\therefore \]\[{{n}_{1}}>{{n}_{2}}\]
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