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Water of volume 2 litre in a container i...

Water of volume 2 litre in a container is heated with a coil of `1kW` at `27^@C.` The lid of the container is open and energy dissipates at rate of `160J//s.` In how much time temperature will rise from `27^@C to 77^@C` Given specific heat of water is
`[4.2kJ//kg`]

A

8 min 20 sec

B

6 sin 2 sec

C

7 min

D

14 min

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The correct Answer is:
A
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