|Class 11 Physics Oscillations||Frequency|
It is defined as number of cycles per second.
number of sine waves in one second
Relation between Period and Frequency
ν = 1/T
where ν = number of cycles in 1 second
T = 1 cycle
Problem: - On an average human heart is found to be beat 75 times in a minute. Calculate frequency and time period?
The beat frequency of heart = 75/ (1 min)
= 75/ (60 s)
= 1.25 s–1
= 1.25 Hz
The time period T = 1/ (1.25 s–1) = 0.8 s