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If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs?
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If the intensity of sound decreases by 20% after passing through one s...
Effect of Passing Sound through Multiple Slabs
Initial Situation:
- Sound passes through one slab, intensity decreases by 20%
Explanation:
When sound passes through one slab, the intensity decreases by 20%. This means that if the initial intensity of the sound is 100 units, it will decrease to 80 units after passing through one slab.
Effect of Passing through Two Successive Slabs:
- Sound passes through first slab, intensity decreases by 20%
- Sound passes through second slab, intensity decreases by 20% again
Calculation:
- After passing through the first slab, the intensity becomes 80% of the original intensity (80 units).
- When this reduced intensity (80 units) passes through the second slab, it decreases by another 20%.
- 20% of 80 is 16, so the intensity decreases by 16 units.
- Therefore, the final intensity after passing through two successive slabs is 64 units (80 units - 16 units).
Conclusion:
When sound passes through two successive slabs, the intensity decreases by 36 units in total, which is a 36% decrease from the original intensity.
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If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs?
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If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs?.
If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the intensity of sound decreases by 20% after passing through one slab, how much the intensity of sound decreases after passing through two successive slabs?.
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