If we use permittivity $ \varepsilon $, resistance $R$, gravitational constant $G$ and voltage $V$ as fundamental physical quantities, then

  • A

    [angular displacement]  $= \varepsilon^0R^0G^0V^0$ 

  • B

    [Velocity] =  $\varepsilon ^{-1}R^{-1}G^0V^0$

  • C

    [force] = $ \varepsilon ^1R^0G^0V^2$

  • D

    all of the above

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If orbital velocity of planet is given by $v = {G^a}{M^b}{R^c}$, then

If the time period $t$ of the oscillation of a drop of liquid of density $d$, radius $r$, vibrating under surface tension $s$ is given by the formula $t = \sqrt {{r^{2b}}\,{s^c}\,{d^{a/2}}} $ . It is observed that the time period is directly proportional to $\sqrt {\frac{d}{s}} $ . The value of $b$ should therefore be

  • [JEE MAIN 2013]

Match List$-I$ with List$-II$

List$-I$ List$-II$
$(a)$ $h$ (Planck's constant) $(i)$ $\left[ M L T ^{-1}\right]$
$(b)$ $E$ (kinetic energy) $(ii)$ $\left[ M L ^{2} T ^{-1}\right]$
$(c)$ $V$ (electric potential) $(iii)$ $\left[ M L ^{2} T ^{-2}\right]$
$(d)$ $P$ (linear momentum) $( iv )\left[ M L ^{2} I ^{-1} T ^{-3}\right]$

Choose the correct answer from the options given below

  • [JEE MAIN 2021]

Let us consider an equation

$\frac{1}{2} m v^{2}=m g h$

where $m$ is the mass of the body. velocity, $g$ is the acceleration do gravity and $h$ is the height. whether this equation is dimensionally correct.