A) 2 : 3
B) 3 : 2
C) 9 : 4
D) 4 : 9
Correct Answer: B
Solution :
\[{{\lambda }_{m}}T={{{\lambda }'}_{m}}{T}'\] Þ \[\frac{{{\lambda }_{m}}}{{{{{\lambda }'}}_{m}}}=\frac{{{T}'}}{T}=\frac{3000}{2000}=\frac{3}{2}\]
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