Answer :
Answer: The period and frequency of these waves are 8 s and [tex]0.125s^{-1}[/tex] respectively
Explanation:
Period is defined as the time taken per wave cycle.
Total time duration = 2 minutes = 120 sec (1min = 60 sec)
Number of waves = 15
Hence, period or time duration per wave =[tex]\frac{\text {Total time duration}}{\text {Number of waves}}=\frac{120s}{15}=8s[/tex]
Frequency is defined as the number of waves passing per unit time.
number of waves in 120 seconds = 15
number of waves in 1 seconds = [tex]\frac{15}{120}\times 1=0.125s^{-1}[/tex]
The period and frequency of these waves are 8 s and [tex]0.125s^{-1}[/tex] respectively