A) 1125 K
B) 2750 K
C) 5500 K
D) 11000 K
Correct Answer: B
Solution :
From Wiens law, the product of maximum wavelength\[({{\lambda }_{m}})\]and absolute temperature(T) is a constant, \[{{\lambda }_{m}}T=constant\] \[\therefore \] \[{{\lambda }_{1}}{{T}_{1}}={{\lambda }_{2}}{{T}_{2}}\] Given, \[{{T}_{1}}=5500K,\,{{\lambda }_{1}}=5.5\times {{10}^{-7}}m,\] \[{{\lambda }_{2}}=11\times {{10}^{-7}}m\] \[\therefore \] \[{{T}_{2}}=\frac{{{\lambda }_{1}}{{T}_{1}}}{{{\lambda }_{2}}}\] \[\Rightarrow \] \[{{T}_{2}}=\frac{5.5\times {{10}^{-7}}\times 5500}{11\times {{10}^{-7}}}=2750\,K\]You need to login to perform this action.
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