electric intensity due to an infinite cylinder of radius R and having charge q per unit length at distance r(r>R),from its axis
Hii,
The answer to this will be that it's axis is inversely proportional to r.
Since the cylinder is infinite it can be considered as a wire and we know that for electric field of wire E= lambda/ 2pi Eo r (where r>R)
So, E in inversely proportional to r.
Hope this helps.