Question

The height of a man is measured by a metre scale having graduations $ m $ centimetre only and the height turns out to be $ 170\, cm $ . The scientific method for reporting the measurement is

• A. $ 170 \times 10^{0} \, cm $
• B. $ 1.700 \, m $
• C. $ 170 \, cm $
• D. $ 1.70 \times 10^{2} \, cm $

Answer 1

Answer: (D)

Height $=170\,cm$ It should be given in $SI$ unit
i.e., in metre $=170\,cm=1.70\,m$
(Also, decimal after one digit)
In scientific method it is written as
$1.70\times 10^{2}\,cm$