Two singers are singing together, each with an intensity level of 60 dB.

a. Is the intensity of sound in the hall doubled?

No, the intensity is not simply doubled. Sound intensity levels add logarithmically, not linearly.

b. Is the intensity level of sound doubled?

No, doubling the intensity increases the intensity level by only 3 dB. So, if both singers produce 60 dB each, the combined intensity level is about 63 dB, not 120 dB.

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