Question

Among which of the following statements is not correct for a uniform circular motion:

• A. The velocity of the body is continuously changing.
• B. The speed of the body remains constant.
• C. The distance is always equal to displacement.
• D. Velocity is always perpendicular to radius of the circle

Answer 1

The correct option is C The distance is always equal to displacement.

In a circular motion, whether uniform or not, distance travelled is different from displacement. Hence the statement "The distance is always equal to displacement." is wrong.
Also, in uniform circular motion, the speed of the body is constant. But the velocity of the body keeps changing due to change in direction. Also the direction of velocity is always perpendicular to the radius of circle.