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

Given the calculation provided in the document for the sound intensity at points A, B, and C based on their respective distances (5, 3, and 9 units), what is the ratio IA : IB : IC?
Options
A 81 : 225 : 25
B 729 : 2025 : 225
Correct Answer
C 16 : 9 : 36
D 25 : 9 : 81
Correct Answer

Option B is the correct answer.

Detailed Explanation

The document's problem section explicitly calculates 'IA : IB : IC = k/5² : k/3² : k/9² = 1/25 : 1/9 : 1/81 = 729 : 2025 : 225'. This ratio is derived by finding a common multiplier (18225 in this case, where 18225/25=729, 18225/9=2025, 18225/81=225) for the inverse square of the distances.

Hint

Carefully follow the ratio calculation steps provided in the 'Problem' section of the document, including the final resulting ratio.

Question Info

Course: PHY 104
Topic: Pitch, loudness, quality, timber
Type: Objective
Difficulty: Not specified
Question 384 of 947
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