We have a formula for Resistance of a wire
R=ρL/A………..implies R is propotional to length.
Where ρ, L and A are resistivity, length and the area of conductor respectively.
Then
R=ρL/πr2……………. ‘ r’ is the radius of cross section
Since L and r both are the units of length……one can be expressed in terms of the other
i.e. r = nL
Then
R=ρL/π(nL)2
R=KL/L2…………..k is the constant =ρ/πn2
i.e. R=K/L
ie R is inversely propotional to length…which violates the original formula…….

Any comments???

yes
mr lonely's sentence is convincing to me...that we cannot generalise an eqn by just seeing a piece of wire.........thaks dude
i just happened to get a wrong result (did already know it was wrong)when i was playing with the equation.....just wanted to analyse the faults........

...............definitely radius does not increase with the increament in L
good question by bidhan abt P=I2R and P=v2/R
i appreciate everybody'd comments...........