1. The S.I. unit of pressure is?
atmosphere
bar
torr
pascal
2. Which of the following is not the basic unit of measurement?
radian
kelvin
mole
candela
3. Which of the following physical quantities has the same dimensional formula as momentum?
force
pressure
impulse
angular momentum
4. 'Parsec' is an unit for measuring?
astronomical distances
very small distances
the time
the arc of a circle
5. One Angstrom is equal to?
10^-8 m
10^-10 m
10^8 m
10^10 m