Plane angle and solid angle have :

Dimensional formula for thermal conductivity is (here $K$ denotes the temperature)

${\mu _0}$ and ${\varepsilon _0}$ denote the permeability and permittivity of free space, the dimensions of ${\mu _0}{\varepsilon _0}$ are

If $C$ and $L$ denote capacitance and inductance respectively, then the dimensions of $LC$ are

Match List $I$ with List $II$

LIST$-I$	LIST$-II$
$(A)$  Torque	$(I)$    $ML ^{-2} T ^{-2}$
$(B)$   Stress	$(II)$   $ML ^2 T ^{-2}$
$(C)$   Pressure of gradient	$(III)$   $ML ^{-1} T ^{-1}$
$(D)$   Coefficient of viscosity	$(IV)$   $ML ^{-1} T ^{-2}$

Choose the correct answer from the options given below

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$ : Product of Pressure $(P)$ and time $(t)$ has the same dimension as that of coefficient of viscosity.
Reason $R$ : Coefficient of viscosity $=\frac{\text { Force }}{\text { Velocity gradient }}$
Question : Choose the correct answer from the options given below