Physics
Fluid-Mechanics
Easy
Question
Four rods A, B, C and D of the same length and material but of different radii ,
and 2r respectively, are held between two rigid walls. The temperature of all rods is increased through the same range. If the rods do not bend, then
- the Stress in the rods A,B,C and D in the ratio 1:2:3:4
- the forces on them exerted by the well are in the ratio 1:2:3:4
- the energy stored in the rods due to elasticity is in the ratio 1:2:3:4
- it is independent of area like surface tension while friction depends
The correct answers are: the forces on them exerted by the well are in the ratio 1:2:3:4, the energy stored in the rods due to elasticity is in the ratio 1:2:3:4
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