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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 strainght

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
Since `alpha_(Al)gtalpha_(steel)`, so in bimetallic strip on heating, aluminium strip will expend more than that of steel strip. Due to it, aluminium strip will bend more on convex side and steel strip on side Fig. 7(EP).22.
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Knowledge Check

  • A birmetallic strip made of aluminium and steel (alpha_(Al) gt alpha_(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

  • When a bimetallic strip is heated, it

    A
    Does not bend at all
    B
    Gets twisted in the form of an helix
    C
    Bend in the form of an arc with the more expandable metal outside
    D
    Bends in the form of an arc with the more expandable metal inside

  • If a bimetallic strip is heated it will

    A
    bend towards the metal with lower thermal expansion coefficient
    B
    bend towards the metal with higher thermal expansion coefficient
    C
    not bent at all
    D
    twisted at all

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