Properties of Matter 1 Question 14
14. Two rods of different materials having coefficients of thermal expansion and Young’s moduli 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 , the thermal stresses developed in the two rods are equal provided is equal to
(1989, 2M)
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 14. (c)
Solution:
- Thermal stress
Given,