JEE Main Physics question
Statement 1: A hollow shaft is found to be stronger than a solid shaft made of the same material
Statement 2: The torque required to produce a given twist in a hollow cylinder is greater than that required to twist a solid cylinder of same size and material
Answer: (A)
Solution
For the same mass of material, spreading it farther from the axis (as in a hollow shaft of larger radius) increases the polar moment of inertia, so a hollow
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