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Two rods of equal cross sections area ar...

Two rods of equal cross sections area are joined end the end as shown in figure. These are supported between two rigid vertical walls. Initially the rods are unstrained .

If temperature of system is increased by `DeltaT` then thermal stress developed in first rod-

A

is equal to thermal stress developed in second rod

B

is greater than thermal stress developed in second rod

C

is less than thermal stress developed in second rod

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
As cross sectional area is same & equal and opposite force acting on both rods. So `F//A` = same
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