Pick up the incorrect statement from the following: A. The C.G. of a circle is at its centre B. The C.G. of a triangle is at the intersection of its medians C. The C.G. of a rectangle is at the intersection of its diagonals D. The C.G. of a semicircle is at a distance of r/2 from the centre

The correct answer is D. The C.G. of a semicircle is at a distance of r/2 from the centre.

The C.G. of a circle is at its centre. This is because the mass of the circle is evenly distributed around the centre, so the centre is the point where the net force on any object placed there is zero.

The C.G. of a triangle is at the intersection of its medians. This is because the medians of a triangle divide it into six smaller triangles with equal areas. The C.G. of each of these smaller triangles is at the centroid of the triangle, which is the point where the three medians intersect.

The C.G. of a rectangle is at the intersection of its diagonals. This is because the diagonals of a rectangle bisect each other, and the C.G. of a rectangle is located at the intersection of its

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