Chapter 11 Numerical Problems Examples
Example 11.3: Flash of lightning is seen 1.5 seconds earlier
than the thunder. How far away is the cloud in which the flash
has occurred? (speed of sound = 332 m s-1 ).
Solution: Given that, time t = 1.5 s, speed of sound v = 332 m s-1 .
Therefore, distance of the cloud S = vt = 1.5 s × 332 m s-1 = 498 m.
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