The phase difference between two pointsw separated by 1 in a wave of frequency 120 Hz is 90^(@).The wave velocity will be :

The phase difference between two pointsw separated by 1 in a wave of f

1.	The phase difference between two pointsw separated by 1 in a wave of frequency 120 Hz is 90^(@).The wave velocity will be :
Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/480-1879936" style="font-weight:bold;" target="_blank" title="Click to know more about 480">480</a> m//s`<br/>`180 m//s`<br/>`720 m//s`<br/>`240 m//s`</p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :`Delta <a href="https://interviewquestions.tuteehub.com/tag/x-746616" style="font-weight:bold;" target="_blank" title="Click to know more about X">X</a>= 1 m Delta varphi=90^(@)=(pi)/(2) "rad", gamma =12 Hz` <br/> As `Delta varphi =(<a href="https://interviewquestions.tuteehub.com/tag/2pi-1838601" style="font-weight:bold;" target="_blank" title="Click to know more about 2PI">2PI</a>)/(<a href="https://interviewquestions.tuteehub.com/tag/lambda-539003" style="font-weight:bold;" target="_blank" title="Click to know more about LAMBDA">LAMBDA</a>)xx Delta x` <br/> (or) `(pi)/(2)=(2pi)/(lambda)xx1` <br/> (or) `lambda=4m` <br/> `v= gamma lambda120xx4= 480 m//s`</body></html>