the intensity level of a sound is 2 bel greater than another sound how many thimes is the first more intense than the second?
Answers
CORRECT OPTION IS (C)-1000HZ
EXPLAIN:-
Sound intensity levels are quoted in decibels (dB) much more often than sound intensities in watts per meter squared. Decibels are the unit of choice in the scientific literature as well as in the popular media. The reasons for this choice of units are related to how we perceive sounds. How our ears perceive sound can be more accurately described by the logarithm of the intensity rather than directly to the intensity. The sound intensity level β in decibels of a sound having an intensity I in watts per meter squared is defined to be
β
(
dB
)
=
10
log
10
(
I
I
0
)
, where I0 = 10−12 W/m2 is a reference intensity. In particular, I0 is the lowest or threshold intensity of sound a person with normal hearing can perceive at a frequency of 1000 Hz
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