A) \[5{}^\circ C\]
B) \[6{}^\circ C\]
C) \[7{}^\circ C\]
D) \[8{}^\circ C\]
Correct Answer: A
Solution :
Heat given \[Q=ms\Delta t\] Heat given to copper = Heat given to water \[{{m}_{1}}{{s}_{1}}\Delta {{t}_{1}}={{m}_{2}}{{s}_{2}}\Delta {{t}_{2}}\] \[{{s}_{1}}=0.1cal/g{{\,}^{o}}C,{{s}_{2}}=1\,cal/g{{\,}^{o}}C\] \[50\times 0.1\times 10=10\times 1\times \Delta {{t}_{2}}\] \[\Delta {{t}_{2}}=5{{\,}^{o}}C\]
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