Question

A simple pendulum makes 10 oscillations in 20 seconds. Whatis the time period and frequency of its oscillation?NCERT Class VIIIScience - Exemplar ProblemsChapter 13. Sound

Answer 1

10 oscillation in 20 seconds

so 1 oscillation in ( ? ) second

= 1 × 20 / 10

= 2 seconds for single oscillation.

Frequency = 1 / time period

= 1 / 2

= 0.5 Hertz or second^-1.

Hope it helps!

Answer 2

time period=1/frequency
10 oscillation in 20 second
therefore 2 oscillation per second.
time period=1/2
time period=0.5 seconds

hope this helps!!