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50 g of copper is heated to increase its...

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`)

A

`5^@ C`

B

`6^@ C`

C

`7^@ C`

D

`8^@C`

Text Solution

Verified by Experts

The correct Answer is:
A
`Q_(Cu) = m_(cu)S_(cu) Delta = 50 xx 10^(-3) xx 420 xx 10 = 42 xx 5`
Now, `m_(w)s_(w) Delta T =42 xx 5`
`Delta T= (42 xx 5)/(10 xx 10^(-3) xx 4200) = 5^@C`
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