1.

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)=

Answer»

`2 : 3`
`1 : 1`
`3 : 2`
`4 : 9`

ANSWER :C


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