Match the column

Column I

Column II
(1)
A motion that repeats itself in regular intervals of time
(a)
Circular motion
(2)
A motion in which an object moves to and from about a mean position.
(b)
Rotational motion
(3)
An athlete moving on a circular track.
(c)
Oscillatory motion
(4)
Motion of ceiling fan.
(d)
Periodic motion

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1-d; 2-c; 3-a; 4-b

1-a; 2-b; 3-c; 4-d

1-b; 2-a; 3-d; 4-c

1-b; 2-a; 3-c; 4-d

answer is A.

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Detailed Solution

Periodic motion is defined as motion that repeats at regular intervals.
The motion in which an object moves back and forth about its average position is called oscillatory motion.
Motion along a constant velocity circular orbit is an example of uniform circular motion, and the motion of a ceiling fan is an example of rotational motion. Rotation is around a fixed axis.
Matrix:

	Column I		Column II
(1)	A motion that repeats itself in regular intervals of time	(d)	Periodic motion
(2)	A motion in which an object moves to and from about a mean position.	(c)	Oscillatory motion
(3)	An athlete moving on a circular track.	(a)	Circular motion
(4)	Motion of ceiling fan.	(b)	Rotational motion