Question

The ratio of lenght of two rods of different materials is taken as 2:3 such that the difference of their lenght is 10 cm at all temperature . The lenght of the rod of lesser expansion is?​

Answer 1

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11th

Physics

Thermal Properties of Matter

Thermal Expansion

Two metal rods A and B are ...

PHYSICS

Two metal rods A and B are having their initial lengths in the ratio 2:3 and coefficients of linear expansion in the ratio 3:4. When they are heated through the same temperature difference, the ratio of their linear expansion is :

A

1:2

B

2:3

C

3:4

D

4:3

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ANSWER

We know, dl=l×α×dt

dl1/dl2=(l1/l2)(α1/α2)=(2/3)(3/4)=1/2

Explanation:

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