Question Detail

PHY 104 Wave and sound Objective Question
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Question

What is the approximate value of the reference intensity (I₀) used in the decibel scale, as stated in the document?
Options
A 10⁻¹⁰ W/m²
B 10⁻¹² W/m²
Correct Answer
C 10⁻¹⁴ W/m²
D 10⁻⁸ W/m²
Correct Answer

Option B is the correct answer.

Detailed Explanation

On page 19, the text states: 'The loudness at this intensity is zero decibel. I₀ is about 10⁻¹² W/m².'

Hint

Find the specific value associated with the threshold of hearing or zero decibels.

Question Info

Course: PHY 104
Topic: Wave and sound
Type: Objective
Difficulty: Not specified
Question 348 of 947
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