A heating coil of 2000 W is immersed in ...

A heating coil of `2000 W` is immersed in water . How much time will it take in raising the temperature of `1 L` of water from `4^(@) C "to" 100^(@) C`? Only `80%` of the thermal energy produced is used in raising the temperature of water.

`60^(@)`

`75^(@)`

`120^(@)`

`135^(@)`

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