IGCSE Physics - Measurements & Units and prefixes

The S.I. unit for time is

• minute

• seconds

• hours

• days

The S.I. unit for current is

• volt

• ohms

• ampere

• watt

The S.I. unit for light intensity is

• joule

• watt

• candela

• kelvin

The S.I. unit for length is

• yard

• meter

• foot

• inches

The physical quantities other than base quantities are termed as

• professional quantities

• energetic quantities

• dependent quantities

• derived quantities

The S.I. prefix  $\mu$  indicates 

•  $10^{-3}$  

•  $10^{-2}$  

•  $10^{+6}$ 

•  $10^{-6}$  

The S.I. prefix centi indicates x $10^{-2}$ . Which option below correctly indicates the prefixes milli and giga 

• $10^{-3\ }$ and $10^9$

•  $10^3$  and  $10^6$ 

• $10^{-9}$ and  $10^9$ 

• $10^{-9}$ and $10^6$ 

Which pair of units are both S.I. base units (the seven units from which all others are derived)?

• meter, degree celsius

• newton, kilogram

• ampere, kelvin

• joule, seconds

The S.I. prefix hecto indicates x $10^2$ . Which option below correctly indicates the prefixes mega and nano

•  $10^6$  and  $10^9$  

•  $10^{-6}$  and  $10^3$  

•  $10^6$  and  $10^{-9}$  

•  $10^3$  and  $10^{-9}$  

What is the smallest interval of a metre scale?

• 1.0 cm

• 0.1 cm

• 0.01 cm

• 0.001 cm