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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

The twisting couple per unit twist for a solid cylinder of radius 3 cm is 0.1 N-m. The twisting couple per unit twist, for a hollow cylinder of the same material with outer and inner radii 5 cm and 4 cm respectively, will be

Answer: (B)

Solution

for a solid cylinder and for a hollow one (same ).

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Question ID VK-155014