The time period of a simple pendulum is found to be 2.2 sec, 1.8 sec, 2 sec, 1.6 sec and 2.4 sec. What is the average time period (in sec)?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 2.
Average = Sum of observations / Number of observations
Sum = 2.2 + 1.8 + 2 + 1.6 + 2.4 = 10
Average = 10 / 5 = 2 sec