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A rocket in a fireworks display explodes...

A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is `2.0 xx 10 W//m^2` at a distance of 120 m from the explosion. Find the distance from the source at which the intensity is `0.80 xx 10^(-6)W//m^2` .

A

690 m

B

220 m

C

110 m

D

190m

Text Solution

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The correct Answer is:
D
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RESNICK AND HALLIDAY-WAVE - II-PRACTICE QUESTIONS (SINGLE CORRECT CHOICE TYPE)
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  18. A string of length 1m and mass 5g is fixed at both ends. The tension i...

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