50g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10g of water, the rise in its temperature is (specific heat of copper = 420J/kg/∘C)
5°C
Same amount of heat is supplied top copper and water; so
mcccΔTc = mωcωΔTω
⇒ (ΔT)ω = mcccΔTcmωcω = 50 × 10−3 × 420 × 1010 × 10−3 × 4200 = 5∘C