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The length of an elastic string is a met...

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

A

`a-b`

B

`5b-4b`

C

`2b-(1)/(4) a`

D

`4a-3b`

Text Solution

Verified by Experts

The correct Answer is:
B
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