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A hot ball of iron weighing 200 g is dro...

A hot ball of iron weighing 200 g is dropped into 500 g of water at `10^@C`. The resulting temperature is `22.8^@C`. If the specific heat of iron is `0.08 (cal)/g^@C` then the temperature of hot ball is

A

`422.8^@C`

B

`400^@C`

C

`62.8^@C`

D

`42.8^@C`

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