A student found out from a simple pendulum experiment that 20 oscillations were completed in 38 seconds.
A
8.0s
B
3.8s
C
1.9s
D
2.0s
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Period of oscillation = \(\frac{\text{ time}}{\text{no. of oscillations}}\) = \(\frac{38}{20}\) = 1.9s
Source: WAEC / JAMB / NECO Classroom Archive (Record #76331)