NEET2026Physics-Oscillations
NEET 2026 Physics Simple Pendulum MCQ Question
Type: MCQ-numerical-Medium-Class 11
Savitha, a XI standard student, while conducting an experiment to determine the effective length of a simple pendulum L, notes down the data of time taken to complete 30 oscillations as 60 s and hence calculates the length of the simple pendulum as: (Take π² = 9.8, and g = 9.8 m/s²)
A
0.75 m
B
1.5 m
C
2 m
D
1 m
Correct Answer
Option D
Detailed Explanation
Time taken for 30 oscillations = 60 s. Time period of simple pendulum = Time taken for 1 oscillation = 60/30 = 2 s. Using the formula for the period of a simple pendulum, T = 2π√(L/g), we find L = gT²/4π² = 1 m.
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