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Soundshaving frequency more than 20 Hz are called (a) Infrasonic (b) Supersonic (c) Ultrasonic (d) None of these

Soundshaving frequency more than 20 Hz are called
(a) Infrasonic
(b) Supersonic
(c) Ultrasonic
(d) None of these

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60782 Points
one year ago
(c)

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