Question

duons.
U a hand
Noise is du
owing.
white T for true and 'F' for false.
Infrasonic waves are used by doctors to produce images of body organs,
Sound can travel in all three states of matter.
Sound waves travel through compressions.
4. A shrill sound has lower frequency than a dull sound.
Loudness of sound depends on its wavelength.
6. We can hear a sound of frequency 20,250 Hz.​

Answer 1

Answer:

1.it's true and false also because sometimes doctor makes images mostly in outer countries and it's false because in Pakistan they didn't . But is true ok

2.true

3.true

4.false

5.false

6.false

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