Point of Contraflexure is the Point at Which

Answer: A: B.M. changes sign

The point of contraflexure is the point at which B.M. changes the sign.

Solution:

The point of contraflexure is the location where the sign of the bending moment changes, going from positive to negative or vice versa. The value of the bending moment is zero at the point of contraflexure. Hence, the point of contraflexure is the point at which B.M. changes signs.

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