A) 1456 seconds
B) 1828 seconds
C) 2708 seconds
D) 3250 seconds
Correct Answer: C
Solution :
Heat required\[=(40\times {{10}^{3}})\times 1\times (80-15)\] Now, \[H=\frac{{{V}^{2}}t}{R\times 4.2}cal\] \[\Rightarrow \] \[t=\frac{HR\times 4.2}{{{V}^{2}}}\] \[=\frac{26\times {{10}^{5}}\times 12\times 4.2}{220\times 220}\] \[=\mathbf{2708}\]seconds.You need to login to perform this action.
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