A) \[\frac{2\lambda }{3}\]
B) \[\frac{3\lambda }{2}\]
C) \[\frac{4\lambda }{9}\]
D) \[\frac{9\lambda }{4}\]
Correct Answer: A
Solution :
According to Wiens displacement law \[{{\lambda }_{m}}T=\operatorname{constant}\] or \[\frac{{{\lambda }_{2}}}{{{\lambda }_{1}}}=\frac{{{T}_{1}}}{{{T}_{2}}}\] \[\therefore \] \[\frac{{{\lambda }_{2}}}{\lambda }=\frac{2000}{3000}=\frac{2}{3}\] or \[{{\lambda }_{2}}=\frac{2}{3}\lambda \]
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