Question

Assertion (A): The dimensional formula of force is [MLT⁻²] Reason (R): The dimensional formula of any physical quantity is derived by equating it to the base quantities (mass, length, time) raised to appropriate powers

Assertion (A): The dimensional formula of the gravitational potential energy is [ML²T⁻²] Reason (R): Gravitational potential energy is given by U=mgh where m is mass, g is acceleration due to gravity, and h is height. The dimensional formula of g is [LT⁻²]

Deduce the dimensional formula for the following physical quantities a) coefficient of viscosity b) surface tension

The Van der Waal equation for 1 mole of a real gas is (P + a/V²)(V – b) where P is the pressure, V is the volume, T is the absolute temperature, R is the molar gas constant and a, b are Van der Waal constants. Find the dimensions of a/b