Question Detail

PHY 104 Pitch, loudness, quality, timber Objective Question

Question

Given a reference intensity (I₀) of 10⁻¹² W/m², what is 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

The document provides this example calculation: 'L = 10log₁₀(10⁻¹¹ / 10⁻¹²) = 10log₁₀(10) = 10 dB'.

Hint

Use the formula L = 10log₁₀(I/I₀) and substitute the given values.

Question Info