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Question: For a sound sources of intensity 1 W/m<sup>2</sup>, corresponding sound level is B<sub>0</sub> decib...

For a sound sources of intensity 1 W/m2, corresponding sound level is B0 decibel. If intensity is increased to 4I, new sound level becomes:

A

2B0Db

B

(B0 + 3)Db

C

(B0 + 6)Db

D

4B0dB

Answer

(B0 + 6)Db

Explanation

Solution

If intensity is doubled the sound level is increased by 3.0 dB. i.e it becomes (B0 + 3) decibels. Hence when intensity is increased four times, level becomes (B0 + 6) decibels.