Question

Which of the following has the dimension of$\mathrm{ML}^{0} \mathrm{~T}^{-2}$ ?
(A) Coefficient of viscosity(B) Surface tension
(C) Vapour pressure
(D) Kinetic energy

Answer 1

Ans: (B)
$$\begin{aligned} \text { Surface tensiọn } &=\frac{\delta \mathrm{w}}{\mathrm{dA}}=\frac{\mathrm{F} \cdot \mathrm{dx}}{\mathrm{dA}} \\ &=\mathrm{FL}^{-1}=\mathrm{MT}^{-2}=\mathrm{ML}^{0} \mathrm{~T}^{-2} \end{aligned}$$