Which of the following is not the law of a stretched string ? ( n , l , T and m are frequency of vibration , length of vibrating string , tension in string and linear mass density , respectively .)

Options

A. `n prop (1)/(sqrtT)`
B. `n prop (1)/(l)`
C. `n prop (1)/(sqrtm)`
D. All the above

Answer

A

Explanation

Laws of stretched strings are :
`n prop (1)/(l)` (law of length)
`n prop sqrtT` (law of tension ) and
`n prop (1)/(sqrtm)` (law of linear mass density)