The viscous force $F$ acting on a sphere of radius $r$ moving with velocity $v$ through a fluid of viscosity $\eta$ is given by $F = 6\pi \eta rv + kr^2v^2$. The dimensions of $k$ are:

Temperature can be expressed as a derived quantity in terms of any of the following

$1kWh\; =$

A physical quantity u is given by the relation $u = \frac{{{B^2}}}{{2{{\rm{\mu }}_0}}}$ here, B=magnetic field strength ${{\rm{\mu }}_0} =$ magnetic permeability of vacuum.

Which of the following is not a valid application of the principle of homogeneity?

Which one of the following is not a unit of Young’s modulus?

A physical quantity is measured and its value is found to be nu where where n= numerical value and u= unit. Then which of the following relations is true

Henry/ohm can be expressed in

SI unit of intensity of wave is

The unit of potential energy is

Which of the following physical quantities has neither dimensions nor unit?