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Subjects
Science CBSE
Class 9
Sound
Textbook based HOTS
13.
Multiple choice question XIII
Exercise condition:
2
m.
1
.
The number of oscillations passing through a point in unit time is called:
vibration
frequency
wavelength
none of the above
2
.
The SI unit of frequency is :
hertz
gauss
decibel
none of the above
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