A) \[8\times {{10}^{-3}}kg\]
B) \[9.2\times {{10}^{-3}}kg\]
C) \[5.4\times {{10}^{-3}}kg\]
D) \[6.9\times {{10}^{-3}}kg\]
Correct Answer: D
Solution :
From the formula\[\frac{d\theta }{dt}=mL\] where t = 1 m, m = mass, L = latent heat \[\frac{KA({{\theta }_{1}}-{{\theta }_{2}})t}{l}=mL\] \[m=\frac{KA({{\theta }_{1}}-{{\theta }_{2}})\times 60}{1\times 8\times {{10}^{4}}}\] \[m=\frac{{{10}^{-3}}\times 92\times (100-0)\times 60}{1\times 8\times {{10}^{4}}}\] \[=6.9\times {{10}^{-3}}kg\]You need to login to perform this action.
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