What is a physical quantity ?

What is physical quantity ?

What is the physical quantity of ampere.

What is the physical quantity of mole?

What is the physical quantity measured in cm^(2) ?

What is the physical quantity of the time rate of the angular momentum?

What is physical quantity of the unit Joule xx" second"^(2) ?

What is the physical quantity same for X - rays of wavelength 10^(-10) m, red light of wavelength 6800 Å and radiowaves of wavelength 500 m ?

In Poiseuille's method of determination of viscosity , what is the physical quantity that requires greater accuracy in measurement ? Formula eta = (pi P r^4)/(8 VI)

In Poiseuille's method of determination of viscosity , what is the physical quantity that requires greater accuracy in measurement ? Formula eta = (pi P r^4)/(8 VI)