JAMB Physics 1981 Question 46

The relationship between the period T and the length l of a simple pendulum is T = 2π(l/g)^1/2. From experimental data of T and l, one can obtain the following graphs. (i) T vs. l (ii) T vs. l² (iii) T² vs. l (iv) T vs. √l (v) log T vs. log l. Which of the graphs are linear?

1. A.All
2. B.Only (i) and (ii)
3. C.Only (iii) and (iv)
4. D.(iii), (iv) and (v)
5. E.None of them.