Calculate the frequency and time period of strobe light flashing 25 times in 5 seconds ?

Open in App

Solution

Step 1: Given data
Numbers of vibrations = 25
Time = $5 s e c o n d s$
Step 2: Formulas used
Frequency is the number of vibrations(cycles) per unit time.
Frequency $f = \frac{N u m b e r o f v i b r a t i o n s}{T i m e}$ .
Frequency is inversely proportional to the time period.
Time period $t = \frac{T i m e}{N u m b e r o f v i b r a t i o n s}$ .
Step 3: Calculating the frequency
$f = \frac{25 v i b r a t i o n s}{5 s e c o n d s} f = 5 h e r t z$
Step 4: Calculating the time period
$t = \frac{5 s e c o n d s}{25 v i b r a t i o n s}$
$t = \frac{1}{5} = 0.2 s e c o n d s$
Hence,the tine period is $0.2 s e c o n d s$ and frequency is $5 H z$ of a strobe light.

Suggest Corrections

Similar questions

25

5.0 s

A bicycle wheel spins 25 times in 5 seconds. Calculate the period and frequency of the wheel.

A sound wave travels 30 oscillationsin 5 seconds. calculate its frequency and its time period .

Join BYJU'S Learning Program