Question Detail

PHY 104 Pitch, loudness, quality, timber Objective Question
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Question

Given a reference intensity (Io) of 10-12 W/m², calculate the loudness in decibels for an intensity (I) of 10-11 W/m².
Options
A 1 dB
B 10 dB
Correct Answer
C 100 dB
D 0 dB
Correct Answer

Option B is the correct answer.

Detailed Explanation

Using the formula L = 10log10(I/Io): L = 10log10(10-11 / 10-12) = 10log10(101) = 10 * 1 = 10 dB. This matches the example in the text.

Hint

Remember the properties of logarithms, especially log10(10x) = x.

Question Info

Course: PHY 104
Topic: Pitch, loudness, quality, timber
Type: Objective
Difficulty: Not specified
Question 425 of 947
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