Question

The thunder of a lightening in the sky is heard 20 seconds after the flash of light. If the speed of
sound is 330 m/s, the distance of lightening is
(A) 6.6 km
(B) 6 x 100 m
(C) 660 m
(D) 660 km​

Answer 1

Solution :

Given:

Time (t) = 20 s

Speed of sound (velocity) = 330 m/s

So, as per the formula of velocity,

We know that:

$\boxed{\sf{Velocity =\frac{ Distance}{Time}}}$

That is:

$\boxed{\sf{Distance = Velocity \times Time}}$

By substituting the values, we get:

$\implies$ Distance = Velocity × Time

$\implies$ Distance = 330 x 20

$\implies$ Distance = 6600 km

Therefore,

The distance of lightening is 6.6 km.

Correct option: (A) 6.6 km

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Answered by: Niki Swar, Goa❤️

Answer 2

hey

Explanation:

Correct option A== 6.6 km

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