4200 , J of work is required for - Vidyadip

MCQ

$4200\, J$ of work is required for

A
Increasing the temperature of $10\, gm$ of water through $10°C$
✓
Increasing the temperature of $100\, gm$ of water through $10°C$
C
Increasing the temperature of $1 \,kg$ of water through $10°C$
D
Increasing the temperature of $10\, kg$ of water through $10°C$

✓

Answer

Correct option: B.

Increasing the temperature of $100\, gm$ of water through $10°C$

b
(b) Work done to raise the temperature of $100\,gm$ water through $10°C$ is

$W = JQ = 4.2 \times (100 \times {10^{ - 3}} \times 1000 \times 10) = 4200\,J$

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