Question

Which of the following is NOT the correct measurement of S.I. unit?

• A. $5m$ of cloth.
• B. $20seconds$ of time.
• C. Surface area of $25c{m}^2$.
• D. $2kg$ of cooking oil.

Answer 1

The correct option is C

Surface area of $25c{m}^2$.

S.I. unit of area is $m^2$, but surface area is given in $c{m}^2$. S.I. unit for time is second, meter for length and kilogram for mass.,