An instrument which gives a level of high accuracy than mechanical watch is

Substances which larger masses are usually measured in

A. kilograms

B. grams

C. tones

D. metric tones

In SI system the unit of area is

A. meter

B. square

C. meter square

D. meter cube

The standard unit of time according to SI system is

A. minute

B. second

C. hour

D. day

A single system on which all scientists all over the world agree for units of measurement is called

A. SI units

B. International System of Units

C. both a and b

D. universal system

Electronic stop watch gives a display of digital reading along with accuracy up to

A. 0.01s

B. 0.1s

C. 0.10s

D. 1s