Question

the frequency of a given sound is 1.2 crore has how many vibration it completes in a minute​

Answer 1

1.2 KHz = 1200 Hz   =   1200 vibrations/second (for sound)

    Answer: 1200 vibrations every second

Answer 2

Frequency = 1.2 crore

Therefore, vibrations = 1.2 crore / second.

= 1.2*60 crore per minute.

= 72 crore per minute.

$hope \: this \: helps$