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A bimetallic strip is formed out of two ...

A bimetallic strip is formed out of two identical strips one of copper and the other of brass. The co-efficients of linear expansion of the two metals are `alpha_(C)` and `alpha_(B)`. On heating, the the strip bends to form an are of radius of curvature `R`. Then `R` is

A

Proportional to `DeltaT`

B

Inversely proportional to `DeltaET`

C

Proportional to `|alpha_(B)-alpha_(C)|`

D

Inversely proportional to `|alpha_(B)-alpha_(C)|`

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