Question

which of these is not a medum of progapation of sound a) vacum b) water c ) steel d) air​

Answer 1

Answer:

vaccum

hope it's helpful

Answer 2

Answer:

$\huge \underline \mathfrak \red{Answer}$

Explanation:

Vacuum

Radio waves are electromagnetic waves and do not need a medium to propagate. Sound waves needs a medium to propagate.