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A metal blick is made from a mixture of ...

A metal blick is made from a mixture of 2.4 kg of aluminium 1.6 kg of brass and 0.8 kg of copper. The amount of heat required to raide the temperature of this block from `20^(@)C` to `80^(@)C` is (specific heats of aluminium brass and copper are `0.216, 0.0917 cal kg^(-1)``^(@)C^(-1)` respectively)

A

96.2 cal

B

44.4 cal

C

86.2 cal

D

62.8 cal

Text Solution

Verified by Experts

The correct Answer is:
B
Heat required
`Q = m_(1)c_(1)DeltaT + m_(2)c_(2)DeltaT + m_(3)c_(3)DeltaT`
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