Question

Match the contents of column $\text{(I)}$ with contents of the column $\text{(II)}$.

$\text{(i)}$ Unit of mass	$\text{(a)}$ Metre
$\text{(ii)}$ Pendulum of clock	$\text{(b)}$ Circular motion
$\text{(iii)}$ Point on the blade of a rotating fan	$\text{(c)}$ kilogram
$\text{(iv)}$ S.I. unit of length	$\text{(d)}$ Periodic motion

• A. $\text{(I) - (b); (II) - (d);}$ $\text{(III) - (c); (IV) - (a)}$
• B. $\text{(I) - (c); (II) - (d);}$ $\text{(III) - (b); (IV) - (a)}$
• C. $\text{(I) - (a); (II) - (b);}$ $\text{(III) - (c); (IV) - (d)}$
• D. $\text{(I) - (c); (II) - (b);}$ $\text{(III) - (d); (IV) - (a)}$

Answer 1

The correct option is B $\text{(I) - (c); (II) - (d);}$ $\text{(III) - (b); (IV) - (a)}$

The S.I. unit of mass and length are kilogram and metre respectively. The pendulum of the clock repeats its motion at a fixed interval of time. This type of motion is known as periodic motion. The point on the blade of the fan undergoes circular motion.