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Two rods of different materials, having coefficients of linear expansion `a_(1) anda_(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 rods. If `alpha_(1)//alpha_(2)=2//3`, then the thermal stresses developed in the two rods are equal, provided `Y_(1)//Y_(2)` is equal to :

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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AAKASH INSTITUTE ENGLISH-THERMAL PROPERTIES OF MATTER-Assignment (Section-A) Objective Type questions (one option is correct)
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  9. 80 g of water at 30^@C are poured on a large block of ice at 0^@C. The...

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  10. Work done in converting one gram of ice at -10^(@)C into steam at 100^...

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  11. 2gm of steam condenses when passed through 40 gm of water initially at...

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  12. The temperature of 100 g of water is to be raised from 24^@C to 90^@C ...

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  13. 10 gm of ice at -20^(@)C is dropped into a calorimeter containing 10 g...

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  14. The portion of the curve representing the state of matter denotes

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  15. Water falls from a height 500 m. what is the rise in temperature of wa...

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  16. Latent heat of ice 80 cal/gm . A man melts 60 g of ice by chewing in 1...

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  17. There indectical thermal conductors are connected as shown in Fig. 7(C...

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  18. Consider a composite slab consisting of two different materials having...

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  20. The dimensions of thermal resistance are

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