Question Detail

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

What is the loudness in decibels (dB) when the sound intensity (I) is equal to the reference intensity (I₀)?
Options
A 0 dB
Correct Answer
B 1 dB
C 10 dB
D 100 dB
Correct Answer

Option A is the correct answer.

Detailed Explanation

The text states: 'When I = I₀, L = 10log₁₀(I₀/I₀) dB = 10log₁₀(1) dB = 0 dB. The loudness at this intensity is zero decibel.' This is the baseline for the decibel scale.

Hint

Consider the mathematical property of log₁₀(1).

Question Info

Course: PHY 104
Topic: Pitch, loudness, quality, timber
Type: Objective
Difficulty: Not specified
Question 433 of 947
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