50 g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10 g of water, the rise in its temperature is: Specific heat of copper is 420Jkg−1∘C.
A
5∘C
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B
6∘C
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C
7∘C
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D
8∘C
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Solution
The correct option is A5∘C Same amount of heat is supplied to copper and water. mcccΔTc=mwcwΔTw ΔTw=mcccΔTcmwcw ΔTw=50×10−3×420×1010×10−3×4200 ΔTw=5∘C