A) \[\frac{\lambda }{9}\]
B) \[\lambda \]
C) \[2\lambda \]
D) \[4\lambda \]
Correct Answer: C
Solution :
de broglie wavelength solution \[\lambda =\frac{h}{\sqrt{3mKT}}\] \[{{\operatorname{T}}_{1}}=927+273=1200K\] \[{{\operatorname{T}}_{2}}=273+27=300K\] \[{{\lambda }_{1}}=\frac{h}{\sqrt{3mk\times 1200}}\] \[{{\lambda }_{1}}=\frac{h}{\sqrt{3mk\times 300}}\] \[\frac{{{\lambda }_{1}}}{\lambda }=\frac{1}{2}={{\lambda }_{1}}=2\lambda \]
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