The frequency of an oscillating system is given by
f= (1/2pi)(g/l)^1/2
where g and pi are constants.
The frequency f is measured for different values of length l and a graph is plotted. Which one of the following will produce a straight line graph?
y x
1. f^1/2 l^1/2
2. f^1/2 l
3. f^2 1/l
4. f^2 l^1/2
Answer: 3
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