The diameter of a stretched string is increased 3% keeping the other parameters constant then the velocity

Options

A. 3% increases
B. 1.5% increases
C. 3% decreases
D. 1.5 Increases

Answer

C

Explanation

`V=sqrt(T/m) = sqrt(((T)/(rV))/(l))=(Tl)/(2pir^2l)`
`therefore V prop 1/d therefore` decreases by 3%