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
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
A. `9l_(1)-8l_(2)`
B. `5l_(1)+4l_(2)`
C. `5l_(1)-4l_(2)`
D. `9l_(2)-8l_(1)`
4 views
1 Answers
Correct Answer - B
`L=(T_(2)l_(1)-T_(1)l_(2))/(T_(2)-T_(1))`
`=(5l_(1)-4l_(2))/(5-4)=5l_(1)-4l_(2)`.
4 views
Answered