Question

The change in...................... of light rays while going from one medium to another is called refraction.

Answer 1

The change is $\textbf{direction or speed }$ of light rays while going from one medium to another is called refraction.

Answer 2

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$Hello \: dear \\ \\ The \: change \: in \: direction \: or \\ \: speed \: of \: light \: rays \: while \\ \: going \: from \: one \: medium \\ \: to \: another \: is \: called \\ \: refraction. \\ \\ thanks$
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