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Science CBSE Homework Assignments
Class 9
Sound
Types of wave
1.
Speed of the wave
Task:
2
m.
The wave length of wave is \(1500\ m\) and it's frequency is \(20\ hz\). Calculate the speed of this wave.
\(30\ ms^{-1}\)
\(300\ ms^{-1}\)
\(3000\ ms^{-1}\)
\(30000\ ms^{-1}\)
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