Question

$\text{Which of the following is correct ?}$
$\left(I\right)1millimeter=0.001meter$
$\left(II\right)1000millimeter=1meter$
$\left(III\right)1kilometer=1000meter$

• A. I and II are correct
• B. I and III are correct
• C. II and III are correct
• D. All are correct

Answer 1

The correct option is D

All are correct

1 mm is $\frac{1}{1000}$ of a meter and 1 meter is $\frac{1}{1000}$ of a kilometre.So all the following relations hold true.
$1millimeter=0.001meter$
$1000millimeter=1meter$
$1kilometer=1000meter$