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                                    Question 10Ultrasound has frequency of vibration(a) Between 20 and 20,000 Hz(b) Below 20 Hz(c) Above 20,000 Hz(d) Between 500 and 10,000 Hz | 
                            
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Answer» Question 10 Ultrasound has frequency of vibration (a) Between 20 and 20,000 Hz (b) Below 20 Hz (c) Above 20,000 Hz (d) Between 500 and 10,000 Hz  | 
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