Question

Match the following:
$\begin{array}{cc}ColumnI& ColumnII\\ 1.\text{Soldiers in a march past}& A)\text{Periodic Motion}\\ 2.\text{A mark made on the blade of a rotating fan}& B)\text{Circular Motion}\\ 3.\text{Motion of a swing}& C)\text{Rectilinear Motion}\end{array}$

Select the appropriate option.

• A. 1 - B, 2 - A, 3 - C
• B. 1 - C, 2 - B, 3 - A
• C. 1 - A, 2 - B, 3 - C
• D. 1 - C, 2 - A, 3 - B

Answer 1

The correct option is B

1 - C, 2 - B, 3 - A

- Soldiers in a march past is classified under rectilinear motion as they move in a straight line.
- A mark made on the blade of a rotating fan moves in a circle whenever the blade is rotating. Hence, it is circular motion. However, it is not periodic motion as there are instances where the blade can move at different speeds especially while switching on and off the fan.
-The motion of a swing represents periodic motion as it crosses the mean position at constant intervals of time.