JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

When a certain weight is suspended from a long uniform wire, its length increases by 1 cm. If the same weight is suspended from another wire of the same material and length but having a diameter half of the first one, the increase in length will be

Answer: (C)

Solution

for the same force, length and material. Taking the first wire's elongation

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Question ID VK-154912