Length of an elastic string is 'a' metre when the tension is 4 Newton and 'b' metre when the tension is 5newton. Length in metre when the tension is 9 Newton is.
(A) 4a-5b (B) 5b-4a (c) 9b-9a (D) a+b

The length of an elastic string is Xm when the tension is 8 N, and Y m when the tension is 10 N. The length in metres when the tension is 18 N is

The length of an elastic string is a metre when the longitudinal tension is 4 N and b metre when the longitudinal tension is 5 N. The length of the string in metre when the longitudinal tension is 9 N is

The length of an elastic string is 5 metre when the longitudinal tension is 4 N and 6 metre when the tension is 5 N. If the length of the string (in metre) is "2X" when the longitudinal tension is 9 N (assume Hooke’s law is valid) then the value of X will be :

The length of a rubber cord is l_(1) m when the tension is 4 N and l_(2) m when the tension is 6 N.The length when the tension is 9 N, is

Length of an elastic string is x then tension 5N is applied and its length will be y when tension 7 N. What will be its original length ?

The length of a wire l_(1) when tension is 4 N and l_(2) when the tension is 5 N. Then its original length would be

an elastic spring has a length l_(1) when tension in it is 4N. Its length is l_(2) when tension in it is 5N. What will be its length when tension in it is 9N?

The length of an elastic wire is x under a tension of 5 N. Its length is y when the tension is 7 N. If the tension becomes 9 N then the length of the wire will be