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Two rods of different materials having coefficient of thermal expansion `alpha_(1)` and `alpha_(2)` and Young's moduli `Y_(1)` AND `Y_(2)` respectively are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If `alpha_(1)` and `alpha_(2)` are in the ratio2:3, the thermal stresses i the rods would be same for ratio `Y_(1)//Y_(2)=`

A

`2 : 3`

B

`1 : 1`

C

`3 : 2`

D

`4 : 9`

Text Solution

Verified by Experts

The correct Answer is:
C
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