Q .     `100g` of water is heated from `30^0C` to `50^0C`. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is `4148` J/kg/K):

JEE 2011 Mains
A

`4.2`kJ

B

`8.4`kJ

C

`84`kJ

D

`2.1`kJ

HINT

Change in internal energy =` DeltaU=MsDeltaT .`
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