Calculate the increase in the length of an aluminium bar 2m long when heated from 0°C to 20°C. If the thermal co-efficient of linear expansion of aluminum is 2.5?
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Explanation:
Expansion of rod =coefficientofexpansion×L×ΔT
=2.5×10
−5
×1×(100−20)=0.002m=0.2cm
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