When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are A. Straight line and parabola B. Straight line and circle C. Circle and straight line D. Circle and parabola

The correct answer is: C. Circle and straight line

The body centrode is the path traced by the center of mass of a rolling body. The space centrode is the path traced by a point on the body that is always in contact with the ground.

When a circular wheel rolls on a straight track, the body centrode is a circle. This is because the center of mass of the wheel always stays in the same place relative to the wheel. The space centrode is a straight line. This is because the point of contact between the wheel and the ground always stays in the same place relative to the ground.

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