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Two rods of different materials having coefficient of thermal expansion `alpha_(1) and alpha_(2)` and Young's modulues `Y_(1) and Y_(2)` respectively are fixed betwee two rigid massive walls. The rods are heated such that these undergo same increase in temperature. there is no bending of the rods. if `alpha_(1):alpha_(2)=2:3`, the thermal stress developed in the two rods are equal, provided `Y_(1):Y_(2)` is

A

`2:3`

B

`1:1`

C

`3:2`

D

`4:9`

Text Solution

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The correct Answer is:
C
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