Question Detail

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

Based on the provided solution in the document, if the intensity at points A, B, and C are inversely proportional to the square of their distances from the source (with relative squared distances 5², 3², and 9² respectively), what is the calculated ratio of their intensities IA : IB : IC?
Options
A 25 : 9 : 81
B 81 : 225 : 25
C 729 : 2025 : 225
Correct Answer
D 1 : 1 : 1
Correct Answer

Option C is the correct answer.

Detailed Explanation

The document explicitly provides the solution for the ratio: 'IA : IB : IC = k/5² : k/3² : k/9² = 1/25 : 1/9 : 1/81 = 729:2025:225'. While the numerical conversion from fractions to integers is complex, the final given ratio is 729:2025:225.

Hint

Refer directly to the final calculated ratio given in the 'Problem' section's solution.

Question Info

Course: PHY 104
Topic: Pitch, loudness, quality, timber
Type: Objective
Difficulty: Not specified
Question 445 of 947
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