A) 1 : 1
B) 2 : 1
C) 1 : 2
D) 1 : 4
Correct Answer: B
Solution :
\[{{\lambda }_{1}}=3000\overset{\text{o}}{\mathop{\text{A}}}\,,{{\lambda }_{2}}=6000\overset{\text{o}}{\mathop{\text{A}}}\,\] \[{{E}_{1}}=\frac{hc}{{{\lambda }_{1}}}=\frac{hc}{3000}\] \[{{E}_{2}}=\frac{hc}{{{\lambda }_{2}}}=\frac{hc}{6000}\] \[\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{\frac{h}{3000}}{\frac{hc}{6000}}=\frac{hc}{3000}\times \frac{6000}{hc}=\frac{2}{1}\] \[{{E}_{1}}:{{E}_{2}}=2:1\]
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