Question

Arrange the following lengths in the increasing order of their magnitudes :
1 meter, 1 centimeter, 1 kilometer, 1 millimeter .

• A. 1 meter < 1 centimeter < 1 kilometer < 1 millimeter
• B. 1 millimeter < 1 meter < 1 centimeter < 1 kilometer
• C. 1 millimeter < 1 centimeter < 1 meter < 1 kilometer
• D. none of these

Answer 1

The correct option is C 1 millimeter < 1 centimeter < 1 meter < 1 kilometer

1 kilometer = 10${}^3$ meter

1 centimeter = 10${}^{-2}$ meter

1 millimeter = 10${}^{-3}$ meter

Ascending order of length :
1 millimeter < 1 centimeter < 1meter < 1 kilometer