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Physics Chemistry

Engineering :: Production Engineering

  In ultrasonic welding the frequency range is generally
[A]. 100 - 4000 cps[B]. 4000 - 20,000 cps
[C]. 20,000 - 80,000 cps[D]. 80,000 - 800,000 cps
[E]. 800,000 - 5000,000 cps    

Answer: Option B
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