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A composite rod (formed by joining two r...

A composite rod (formed by joining two rods of equal length l but different materials) is held between two fixed supports as shown. If temperature of the system is lowered by `Deltatheta`, then the displacement of the contact point R is (Symbols or having their usual meanings)

A

`2alpha l Deltatheta`

B

`alpha l Deltatheta`

C

`(alpha l Deltatheta)/2`

D

`(alphalDeltatheta)/4`

Text Solution

Verified by Experts

The correct Answer is:
C
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