Question

solve fast...
$solve \: it \: solve \: it \: solve \: it$
​

Answer 1

Answer:

frequency = 10 hertz

time period = 0.1 sec

Explanation:

no of oscillations = 40

time taken = 4 sec

no of oscillations per second = 40/4 = 10

 therefore the frequency is 10 hertz

time period = 1/f = 1/10 = 0.1 sec

do mark it as brainliest.