Question

If the sound level at a point is increase but 30 db. Then intensity becomes

Answer 1

Answer:

The bel is defined logarithmically, meaning an increase of 1 bel indicates the amplitude increasing by a factor of 10. Since 10 decibels = 1 bel, an increase of 10 decibels indicates the amplitude increasing by a factor of 10.

Since 30 decibels is 3 lots of 10 decibels, the amplitude is increased by 3 factors of 10, or

10

3

=

1000

.