If the sound emitted by a point source reaches a particular position with an intensity I, then the change in intransigent level at that position if N such sources are placed together is

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log N

2 log N

10 log N

12 log N

answer is C.

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Detailed Solution

B1=10log⁡II0 and Bf=10log⁡NII0 Bf=10log⁡N+log⁡II0 or Bf=10log⁡N+10log⁡Bi=10log⁡N+Bi Bf−Bi=10log⁡N

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