The radius of a wire is decreased to one-third. If volume remains the same, the length will become
Given,
R2 = 
1
V1=V2
= πR12h1 = πR22h2
= R12h1 = 
R12h2
= h2= 9h1
19
The radius of a wire is decreased to one-third. If volume remains the same, the length will become
Given,
R2 = 1
V1=V2
= πR12h1 = πR22h2
= R12h1 = R12h2
= h2= 9h1