Question

the thunder of a lightning in the skies here 10 second after the flash of light if the speed of the sound is 330 metre per second the distance of writing is
a) 3.3 km
b) 33km
c) 330 km
d) 3300 km​

Answer 1

$\huge\mathfrak\red{ANSWER}$

(a) - 3.3km

IF THE SOUND OF THUNDER IS HEARD 10SECONDS AFTER LIGHTNING THIS MEANS THAT THE SOUND TOOK 10SECONDS TO TRAVEL FROM CLOUD TO EARTH.

DISTANCE THUNDER TRAVELED = DISTANCE LIGHTNING TRAVELED.

NOW IF SPEED OF SOUND IS GIVEN 330m/s

AND IT TOOK 10 SECOND TO COME TO EARTH.

THEREFORE DISTANCE IT TRAVELED = 10 × 330

$3300 m$

$3300m = 3.3km$

THUS DISTANCE THUNDER AND LIGHTNING BOTH TRAVELED = 3.3 KM.

HENCE CORRECT OPTION IS (a) - 3.3km

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BY SCIVIBHANSHU

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