One femtometre is equivalent to

Which is different from others by units

The unit of momentum is

The time period of a simple pendulum is given by $T = 2\pi\sqrt{\frac{l}{g}} + kx$, where $l$ is the length, $g$ is acceleration due to gravity, and $x$ is displacement. The dimensions of $k$ are:

The unit of self inductance of a coil is

If the speed $v$ of transverse waves on a stretched string depends on the tension $T$ in the string and the mass per unit length $μ$ of the string, which of the following is dimensionally consistent?

Volt/metre is the unit of

Unit of moment of inertia in MKS system

The unit of potential energy is

The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in

The unit of permittivity of free space ${\varepsilon _0}$ is