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A bimetallic strip is made of aluminium ...

A bimetallic strip is made of aluminium and steel `(alpha_(Al)gtalpha_("steel"))`. On heating, the strip will

A

remain straight.

B

get twisted.

C

will bend with aluminium on concave side.

D

will bend with steel on concave side.

Text Solution

Verified by Experts

The correct Answer is:
D
As `alpha_(Al)gtalpha_("steel")`, length of aluminium strip increases. Hence, its radius will bend with steel on concave side.
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Knowledge Check

  • A copper rod of 88cm and an aluminimum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is: (alpha_(Cu) =1.7 xx 10^(-5) K^(-1) and alpha_(Al)= 2.2 xx 10^(-5) K^(-1))

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    D
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