Question

1
77. A pendulum oscillates 30 times in 3 s. Choose the
correct statement from among the following. se
(1) Its time period is 0.3 ş and frequency is 0.3 Hz.
(2) Its time period is 10 s and frequency is 3Hz.
(3) Its time period is 0.1's and frequency is 10 Hz.
(4) Its time period is 10 s and frequency is 0.3 Hz.​

Answer 1

Answer:

option no (3 ) is the answer

because n = 1/T

and according to this formula option 3 satisfied the condition