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Extra Question- Answer                    Physics                                       Class-ix C.B.S.E Answer the following questions:    Q.1) What do you mean by circular motion? Write its salient feature. Ans. When an object changes its position from one point to other point with respect to a fixed point of (center) within a circular path then motion of the object is called circular motion. The salient features of circular motion are: - ·          This kind of motion is planer motion. ·          The reference point of the object is always fixed. ·          The position of the object at the different instance of time with respect to the center of the circla is always same. That is it represents the r...