Question

Calculate the number of oscillations a simple pendulum does in $2$ minutes if its time period is $0.5s$.

• A. $120$
• B. $240$
• C. $360$
• D. $480$

Answer 1

The correct option is B $240$

Time period is the time taken to complete one oscillation.

Given, time period $=0.5s$
No. of oscillation in $0.5s=1$
No. of oscillations in $1s=2$
$2\text{minutes}=120s$
$\therefore$ No. of oscillations in $120s=120\times 2=240$.