Which of the following pairs is wrong
Pressure-Baromter
Relative density-Pyrometer
Temperature-Thermometer
Earthquake-SeismographDimensions
What is unit system ? Write different types of system of units.
Which of the following is not equal to watt
If ${u_1}$ and ${u_2}$ are the units selected in two systems of measurement and ${n_1}$ and ${n_2}$ their numerical values, then
Which of the following is a unit that of force?