Question

write dimensional formula for......

Answer 1

LT-1 as same as the inverse of speed of light okay

Answer 2

If you put the values of permitivity and permeablity and solve it...you will intresting data...which is nothing just a speed of light ( 3 x 10 raised to the power 8 m/s)...which proves that Light is a Electromagnetive wave ( EM - wave) and so it travel with speed 3×10^8 m/s )

The above expression is nothing just a speed of light as ot is a speed ...So we just need to write the Domensions of Speed...as [L T^-1]...