For a sound source of intensity I W / m 2, corresponding sound level is B0 decibel. If the intensity is increased to 4 I, new sound level becomes:

Question

For a sound source of intensity I W / m 2, corresponding sound level is B0 decibel. If the intensity is increased to 4 I, new sound level becomes: (A) 2 B0 dB (B) (B0+3) dB (C) (B0+6) dB (D) 4 B0 dB

Tardigrade Admin · Accepted Answer

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.

Q. For a sound source of intensity $I W / m^{2}$ , corresponding sound level is $B_{0}$ decibel. If the intensity is increased to $4 I$ , new sound level becomes:

$2 B_{0} d B$

$(B_{0} + 3) d B$

$(B_{0} + 6) d B$

$4 B_{0} d B$

If intensity is doubled the sound level is increased by $3.0 d B$ . i.e., it becomes $(B_{0} + 3)$ decibels. Hence when intensity is increased four times, level becomes $(B_{0} + 6)$ decibels.

Q. For a sound source of intensity IW/m2, corresponding sound level is B0​ decibel. If the intensity is increased to 4I, new sound level becomes:

2B0​dB

(B0​+3)dB

(B0​+6)dB

4B0​dB