Physics-
General
Easy
Question
A steel wire is rigidly fixed along diameter of aluminium ring of radius R as shown. Linear expansion coefficient of steel is half of linear expansion coefficient for aluminium, then the thermal stress developed in steel wire is: (aAl is linear expansion coefficient for aluminium and Young’s modulus for steel is Y
- more than R aAl DqY
- less then R aAl DqY
- Equal to R aAl DqY
- equal to 2R aAl DqY
The correct answer is: equal to 2R aAl DqY
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For 
if
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Maths-General
