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30 gram copper is heated to increase its...

`30` gram copper is heated to increase its temperature by `20^@ C` if the same quantity of heat is given to `20` gram of water the rise in its temperature.
`(S_(w)=4200J//kg-K & S_(cu) = 420 J//kg-K)`.

A

`5^@C`

B

`6^@C`

C

`3^@C`

D

`8^@C`

Text Solution

Verified by Experts

The correct Answer is:
C
`Q_(1)=Q_(2)rArr m_(cu)S_(cu) xx Delta theta_(1) =m_(w)S_(w) xx Delta theta_(2)`.
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