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Any material medium can be pictured as a collection of:
ACoupled oscillators
BRigid steel planks
CFrozen fixed points
DIsolated charges
Answer & Solution
Correct answer: A. Coupled oscillators
1. Waves travel because neighbouring parts of a medium interact.
2. Each part can oscillate about its own position.
3. So a medium is pictured as coupled oscillators.
_Source: NCERT Class 11 Physics Part II, Chapter 14, Oscillations._
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