200   g water is heated from 40  o C to 60  o C . Ignoring the slight expansion of water, the…

200 g water is heated from 40 oC to 60 oC . Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water =4184 J kg-1 K-1):
  1. 167.4 kJ
  2. 8.4 kJ
  3. 4.2 kJ
  4. 16.7 kJ

Solution

Assuming isochoric process

Q=∆U

∆U=0.2×4184×20

=16.7 kJ

Asked in: JEE Main 2016 (09 Apr Online)

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