A) 8 min 20 s
B) 6 min 2 s
C) 7 min
D) 14 min
Correct Answer: A
Solution :
[a] From question, |
In 1 sec heat gained by water |
= 1 KW 160 J/s |
= 1000 J/s 160 J/s |
= 840 J/s |
Total heat required to raise the temperature of water (volume 2L) from 27°c to 77°c |
[Q mass = density volume] |
And, |
or |
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