Notifications
Clear all
0
09/01/2021 11:06 am
Topic starter
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
1 Answer
0
09/01/2021 11:08 am
The speed of light (c) is greater than the speed of sound (u) by a factor of 106 as
\(\frac{c}{v}\) = \(\frac{3\times 10^8 ms^{-1}}{340\;ms^{-1}}= 10^6\)
Thus, the flash of light is seen earlier than the thunder of sound even though both are produced simultaneously.