Physics
Grade-9
Easy
Question
A pendulum completes 20 oscillations in 38 secs. What is its time period?
- 1.9 sec
- 0.53 sec
- 3.8 sec
- 2 sec
Hint:
It is solved by dividing the elapsed time to complete a number of vibrations
The correct answer is: 1.9 sec
It is solved by dividing the elapsed time to complete a number of vibrations. T = 38 seconds / 20 oscillations or 1.9 seconds per oscillation. The period of the given simple pendulum is 1.9 seconds.
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