Question

The length of a rope is 2 m and its diameter is 1 mm. The ratio of length of the rope to its diameter is

• A. 200:1
• B. 2000:1
• C. 1:2000
• D. 2:1

Answer 1

The correct option is B

2000:1

The ratio is the method of comparison between two similar quantities having the same unit.
So, 2 m = 2000 mm [$\because$ 1 m = 1000 mm]
$\therefore$ The ratio of the length of rope to its diameter
= $\frac{Lengthofrope}{Diameteroftherope}$
= $\frac{2000}{1}$ = 2000:1.

Hence, the ratio of length of the rope to its diameter is 2000:1