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Subjects
Science CBSE
Class 9
Sound
Textbook based HOTS
28.
Multiple choice question XXVIII
Exercise condition:
2
m.
1
.
When the vibrating object moves backwards, it creates a region of low pressure called
Refraction
Reflection
Rarefaction
Retardation
2
.
Mexican wave in a stadium is an example of
Longitudinal wave
Transverse wave
Electromagnetic wave
None of these
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