Question

Speed of light in vaccum/speed of light inedium=

Answer 1

Answer:

Speed of light in vaccum is :

approximately 300,000 kilometers per second

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Answer 2

$\huge\textbf\color{red}{Answer:-}$

Light travels in vacuum or air with a speed of

$\textbf2.\textbf9\textbf9\textbf7\textbf9 \times {\textbf1\textbf0}^{\textbf8 \:} { \:\textbf s}^{ \textbf- \textbf1}$

which is taken as

$\textbf3 \times { \textbf1 \textbf0}^{ \textbf8} \textbf { m \: s}^ \textbf{ - 1}$

for convenience. This means that light can travel a distance for about 299,792458 metres in one second in vaccum.

Explanation:

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