Question

The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

NCERT Class IX
Sciences - Main Course Book

Chapter 12. Sound

Answer 1

The frequency of a source of sound is 100 Hz.so in 1 sec it vibrates 100 times 
now in 60 secs it will vibrate 6000 times
it vibrates 6000 times in 1 minute

Answer 2

☆$\red {HELLO\:DEAR}$☆

Frequency is defined as the number of oscillations per second. It is given by the relation:

Frequency = Number of Oscillations / Total Time

Number of oscillations = Frequency × Total time

Given, Frequency of sound = 100 Hz

Total time = 1 min = 60 s

Number of oscillations/Vibrations = 100 × 60 = 6000

Hence, the source vibrates 6000 times in a minute, producing a frequency of 100 Hz.

☆$\green {VISHU\:PANDAT}$☆

☆$\blue {FOLLOW\:ME}$☆