If $A$ and $B$ are two physical quantities having different dimensions then which of the following can't denote a physical quantity?
If $x$ and $a$ stand for distance then for what value of $n$ is given equation dimensionally correct the eq. is $\int {\frac{{dx}}{{\sqrt {{a^2}\, - \,{x^n}} \,}}\, = \,{{\sin }^{ - 1}}\,\frac{x}{a}} $
A system has basic dimensions as density $[D]$, velocity $[V]$ and area $[A]$. The dimensional representation of force in this system is
Which of the following is dimensionally correct
$A$ and $B$ possess unequal dimensional formula then following operation is not possible in any case:-