What will be the resultant decibel level when there are 4 sources making noise of equal levels?

What will be the resultant decibel level when there are 4 sources making noise of equal levels?

Q. What will be the resultant decibel level when there are 4 sources making noise of equal levels?

A.            Decibel level will increase by 4 decibels.

B.            Decibel levels will remain the same

C.            Decibel level will increase by 8 decibels

D.            Decibel level will increase by 6 decibels

Answer: Decibel level will increase by 6 decibels

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