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Q: .
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  • A. in phase wave/इन-फेज तरंग
  • B. leading phased wave/अग्रगामी फेज तरंग
  • C. opposite phase wave/विपरीत फेज तरंग
  • D. lagging phase wave/पश्चगामी फेज तरंग
Correct Answer: Option B -
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Explanations:

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