Question

If the time for 20 vibrations is 100 second then find

Answer 1

hey guy

the vibration per second is frequency

then for 20 vibration time taken is 100 second

in 1 second 20/100 vibration took place

it means 0.2 is frequency

for time period , we have

t=1/f

=1/0.2

=5

Answer 2

Explanation:

It is given that,

Number of vibrations, N = 20

Time taken, t = 100 s

2. The total number of vibrations per unit time is called the frequency of the object. It is given by :

$f=\dfrac{20}{100}$

f = 0.2 Hz

1. The reciprocal of the frequency of the particle is called its time period. It is given by :

$T=\dfrac{1}{f}$

$T=\dfrac{1}{0.2}$

T = 5 seconds

Hence, this is the required solution.