Question

the propagation constant of wave is also called?​

Answer 1

$\huge\mathbb\orange{Heya\:Mate..!}$

$\huge\underline\bold\pink{AnSwEr}$

${\huge{\red{\underline{\underline{\mathcal Electro magnetic waves}}}}}$

Answer 2

$\huge{\fbox{\fbox{\bigstar{\mathfrak{\red{Answer}}}}}}$

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Electromagnetic waves 

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Mark this answer as a brainlist......✍✍