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An aluminium vessel of mass 0.5kg contai...

An aluminium vessel of mass `0.5kg` contains `0.2kg` of water at `20^(@)C`. A block of iron of mass `0.2kg` at `100^(@)C` is gently put into the water .Find the equilibrium temperature of the mixture.
Specific heat capacities of aluminium , iron and water are `910 J kg^(-1)K^(-1) ,470J kg^(-1)K^(-1) and 420J kg^(-1)K^(-1)` respectively.

A

`342`

B

`432`

C

`232`

D

`132`

Text Solution

Verified by Experts

The correct Answer is:
B
Apply the principle of method of mixture
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