In a system of units if force $(F)$, acceleration $(A) $ and time $(T)$ are taken as fundamental units then the dimensional formula of energy is
$F{A^2}T$
$FA{T^2}$
${F^2}AT$
$FAT$
Frequency is the function of density $(\rho )$, length $(a)$ and surface tension $(T)$. Then its value is
Which of the following is dimensionally incorrect?
The mass of a liquid flowing per second per unit area of cross section of a tube is proportional to $P^x$ and $v^y$ , where $P$ is the pressure difference and $v$ is the velocity. Then, the relation between $x$ and $y$ is
If $R$ and $L$ represent respectively resistance and self inductance, which of the following combinations has the dimensions of frequency