Question
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.