Question

Select One Correct Option from the following :Water of volume 2 litre in a container is heated with a coil of 1 kW at $27^{\circ}C$. The lid of the container is open and energy dissipates at rate of 160 J/s. In how much time temperature will rise from $27^{\circ}C$.to $77^{\circ}C$.? [Specific heat of water is $4.2 kJ/(kg^{\circ} C)$.]
(A) 8 min 20 s
(B) 6 min 2 s
(C) 7 min
(D) 14 min

Answer 1

1 minute 20 seconds I hope it is help you