MCQ
Ultrasonic waves are those waves
- ATo which man can hear
- ✓Man can't hear
- CAre of high velocity
- DOf high amplitude
✓
Answer
Correct option: B.
Man can't hear
b
(b) Ultrasonic waves are those of higher frequencies than maximum audible range frequencies (audible range of frequencies is $20 \,H$z to $20000 \,Hz$)
(b) Ultrasonic waves are those of higher frequencies than maximum audible range frequencies (audible range of frequencies is $20 \,H$z to $20000 \,Hz$)
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