Theory of Structures
Pick up the incorrect statement from the following: The torsional resistance of a shaft is directly proportional to

Modulus of rigidity
Reciprocal of the length of the shaft
Angle of twist
Moment of inertia of the shaft section

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Theory of Structures
Slenderness ratio of a long column, is

Area of cross-section divided by radius of gyration
Area of cross-section divided by least radius of gyration
Length of column divided by least radius of gyration
Radius of gyration divided by area of cross-section

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