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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a
log N
b
2 log N
c
10 log N
d
12 log N
answer is C.
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Detailed Solution
B1=10logII0 and Bf=10logNII0 Bf=10logN+logII0 or Bf=10logN+10logBi=10logN+Bi Bf−Bi=10logN