Question

S.No Length(l) / cm Time for 20 oscillations (t)/ sec Time period for one oscillation( T)/sec. T=t/20 T2/ (sec)2
1. 25.0 52 0.38
2. 36.0
3. 49.0
4. 64.0
5. 81.0
6. 100.0

Answer 1

i think 1 option is the answer