50 g 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`)

Options

A. `5^(@)C`
B. `6^(@)C`
C. `7^(@)C`
D. `8^(@)C`

Answer

A

Explanation

`Q_(1)=m_(1)s_(1)DeltaT_(1)andQ_(2)=m_(2)s_(2)DeltaT_(2)"So", (Q_(1))/(Q_(2))=(50xx420xx10)/(10xx4200xxT)orT=5^(@)C`