$1.5 imes 10^{12}$ molecules $cm^{-3}$ $\mu s^{-1}$

$2.5 imes 10^{18}$ molecules $cm^{-3}$ $\mu s^{-1}$

$1.5 imes 10^{15}$ molecules $cm^{-3}$ $\mu s^{-1}$

$4.2 imes 10^{20}$ molecules $cm^{-3}$ $\mu s^{-1}$

$M{L^3}{T^{ - 1}}{Q^{ - 2}}$

$M{L^3}{T^{ - 2}}{Q^{ - 1}}$

$M{L^2}{T^{ - 1}}{Q^{ - 1}}$

$ML{T^{ - 1}}{Q^{ - 1}}$

(A) and (B)

(A) and (D)

(B) and (C)

(C) and (E)

$\left[ {{M^0}{L^{ - 1}}{T^0}{A^1}} \right]$

$\left[ {ML{T^{ - 1}}{A^{ - 1}}} \right]$

$\left[ {M{L^0}{T^{ - 2}}{A^{ - 1}}} \right]$

$\left[ {ML{T^{ - 2}}A} \right]$

T = \sqrt{\frac{L}{g}}

T = 2π\sqrt{\frac{g}{L}}

T = 2π\sqrt{\frac{l}{G}}

T = 2π\sqrt{\frac{R^2}{GM}}

Current density and charge density

Angular momentum and momentum

Spring constant and surface energy

Force and torque

Planck’s constant and angular momentum

Impulse and linear momentum

Angular momentum and frequency

Pressure and Young’s modulus

$\left[ {{\rm{M}}{{\rm{L}}^{ - 3}}{\rm{TA}}} \right]$

$\left[ {{{\rm{K}}^0}{\rm{L}}{{\rm{T}}^{ - 2}}{{\rm{A}}^0}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^1}{{\rm{T}}^{ - 2}}{{\rm{A}}^{ - 1}}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 2}}{{\rm{A}}^0}} \right]$

(1), (2) and (3)

(1), (2) and (4)

(1), (3) and (4)

(2), (3) and (4)

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 3}}{{\rm{I}}^{ - 1}}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 2}}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 1}}{{\rm{I}}^{ - 1}}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 3}}{{\rm{I}}^{ - 2}}} \right]$

$\left[ {{\rm{ML}}{{\rm{T}}^{ - 3}}{{\rm{K}}^{ - 1}}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^3}{{\rm{T}}^3}{{\rm{K}}^2}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^3}{{\rm{T}}^{ - 3}}{{\rm{K}}^{ - 2}}} \right]$

$\left[ {{{\rm{M}}^2}{{\rm{L}}^3}{{\rm{T}}^{ - 3}}{{\rm{K}}^2}} \right]$