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A point source of sound produces a sound level of
30dB at a distance of 8m from it. At what distance
from the source the sound level will be 36 dB
- a)2 m
- b)3 m
- c)4 m
- d)6 m
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A point source of sound produces a sound level of30dB at a distance of...
Use formulla I = 10log(i/10^-12)... write two equation .. like this . 30 = 10log (i/64×10^-12). and. . 2 nd is 36 =10log ( i/ r^2×10^-12).. and subtract .. and do antilog you find the value r=4 m .OK so option c
Community Answer
A point source of sound produces a sound level of30dB at a distance of...
Given:
Sound level at 8m = 30 dB
Sound level required = 36 dB
Calculating distance:
- The sound level decreases by 6 dB for every doubling of distance.
- To increase the sound level from 30 dB to 36 dB, we need to increase the distance by 6 dB.
- Since the sound level decreases by 6 dB for every doubling of distance, the distance needs to be halved to increase the sound level by 6 dB.
Calculation:
- To find the distance at which the sound level will be 36 dB, we calculate the distance at which the sound level is 30 dB.
- At 8m, the sound level is 30 dB, so to increase it to 36 dB, we need to double the distance.
- Therefore, the required distance = 8m * 2 = 16m.
Final Answer:
The sound level will be 36 dB at a distance of 16m from the source. Therefore, the correct option is (c) 4m.
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A point source of sound produces a sound level of30dB at a distance of 8m from it. At what distancefrom the source the sound level will be 36 dBa)2 mb)3 mc)4 md)6 mCorrect answer is option 'C'. Can you explain this answer?
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