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CBSE - XII Science - Physics - Electromagnetic Waves

a tuning fork of freequency 340hz is vibrated just above a cylindrical tube of length 120cm. water is slowly poured in the tube. if the speed of sound is 340m/s then the minimum height of water required for resonance is?

Asked by Shashank Shekhar 2nd January 2012, 10:32 PM
Answered by Expert


  =25 cm
next 75 cm,125cm....
so 75 cm air column value is for resonance.
so water column will be of =120-75=45 cm.
Answered by Expert 3rd January 2012, 10:09 AM

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