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Science CBSE Homework Assignments
Class 9
Sound
Basics of sound and vibrating objects
2.
Properties of a sound wave
Task:
2
m.
1
.
Which of the following properties of a sound wave are affected by the change in temperature of air:
frequency
amplitude
wavelength
intensity
2
.
Which of the following cases the sound travels fastest:
hydrogen
helium
nitrogen
oxygen
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