- #1
alkhan22
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Homework Statement
A sound-level meter placed 150 mm from a small sound source records a reading of 45dB. What is the intensity at that point.
Homework Equations
I m using this equation IL = 10 log(I/I.) where I. is the lowest intensity i think which should be 10^-12 W/m^2.
The Attempt at a Solution
I have used the above equation to find the intensity but i get different answer which is 3.16 x 10^-8. but the correct answer given is 31.6 w/m square.
I will be very thankful if some body can hel as this is my 1t question in this forum. please let me know if i have missed something.