The correct possible order of interconversion of waves when our sound is transferred to the rece...

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The correct possible order of interconversion of waves when our sound is transferred to the receiver via a mobile phone is
(a) sound waves \( \rightarrow \) electric current signal \( \rightarrow \) electromagnetic waves (radio waves)
(b) sound waves \( \rightarrow \) electromagnetic waves \( \rightarrow \) electric current signal
(c) sound waves \( \rightarrow \) electric current signal \( \rightarrow \) sound wave
(d) None of the above
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