The dimensions of $K$ in the equation $W = \frac{1}{2}\,\,K{x^2}$ is
${M^1}{L^0}{T^{ - 2}}$
${M^0}{L^1}{T^{ - 1}}$
${M^1}{L^1}{T^{ - 2}}$
${M^1}{L^0}{T^{ - 1}}$
The potential energy $u$ of a particle varies with distance $x$ from a fixed origin as $u=\frac{A \sqrt{x}}{x+B}$, where $A$ and $B$ are constants. The dimensions of $A$ and $B$ are respectively
The velocity $v$ (in $cm/\sec $) of a particle is given in terms of time $t$ (in sec) by the relation $v = at + \frac{b}{{t + c}}$ ; the dimensions of $a,\,b$ and $c$ are
If force $(F),$ velocity $(V)$ and time $(T)$ are taken as fundamental units, then the dimensions of mass are
The magnetic moment has dimensions of
Of the following quantities, which one has dimensions different from the remaining three