Which of the following pairs is wrong
Pressure-Baromter
Relative density-Pyrometer
Temperature-Thermometer
Earthquake-SeismographDimensions
Which of the following system of units is not based on units of mass, length and time alone
Given that: $\lambda = a\,\cos \,\left( {\frac{t}{p} - qx} \right)$ , where $t$ represents time in second and $x$ represents distance in metre. Which of the following statements is true?
Unit of energy in $SI$ system is
The $SI$ unit of the inductance, the henry cannot be written as
The unit of angular acceleration in the SI system is