If the sound of its thunder is heard 1 s after a lightning was observed, how far away (in m) was the source of thunder/lightning from the observer (given, speed of sound = x ms-1, speed of light = y ms-1 ?
1
x2/y
2
xy/(y - x)
3
xy/(x - y)
4
y2/x
If the sound of its thunder is heard 1 s after a lightning was observed, how far away (in m) was the source of thunder/lightning from the observer (given, speed of sound = x ms-1, speed of light = y ms-1 ?