Question Detail

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

According to the text, if the sound intensity (I) is 10⁻¹¹ W/m², and the reference intensity (I₀) is 10⁻¹² W/m², what is the loudness level (L) in decibels?
Options
A 0 dB
B 1 dB
C 10 dB
Correct Answer
D 100 dB
Correct Answer

Option C is the correct answer.

Detailed Explanation

The text calculates this directly: 'L = 10log₁₀ (10⁻¹¹ / 10⁻¹²) = 10log₁₀ 10 = 10 dB'. This demonstrates the application of the decibel formula L = 10log₁₀(I/I₀).

Hint

Apply the formula L = 10log₁₀(I/I₀) using the given values and remember that log₁₀(10) equals 1.

Question Info

Course: PHY 104
Topic: Pitch, loudness, quality, timber
Type: Objective
Difficulty: Not specified
Question 432 of 947
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