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Science CBSE Homework Assignments
Class 9
Sound
Types of wave II
4.
Linear distance
Task:
2
m.
1
.
Non-mechanical (electromagnetic) wave can propagate in:
material medium as well as vacuum
in vacuum, but not in material medium
in material medium but not in vacuum
neither in material medium nor in vacuum
2
.
The linear distance between a compression and a rarefaction or a crest and a trough is:
\(\frac{\lambda}{2}\)
\(\frac{\lambda}{4}\)
\(\lambda\)
\(\frac{3\lambda}{2}\)
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