What is the range of frequencies associated with
(b) Ultrasound?
The ultrasonic sounds have frequencies higher than 20,000 Hertz, which is also not audible for humans.
CBSE Board 2026: Class 10, 12 admit card out for private candidates; exam from February 17
CBSE launches psycho-social counselling services for Class 10, 12 students ahead of board exams 2026
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