Q24.A tunning fork of frequency 340 Hz resonates in the fundamental mode with an air column of length 125 cm in a cylindrical tube closed at one end. When water is slowly poured in it, the minimum height of water required for observing resonance once again is _____ cm. (Velocity of sound in air is 340 ms−1 )
What This Question Tests
This question tests the knowledge of resonance in a closed organ pipe, specifically calculating the air column length for fundamental and first overtone modes.
Concepts Tested
Formulas Used
v = fλ
L = λ/4 (fundamental)
L = 3λ/4 (first overtone)
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📋 Question Details
- Chapter
- Waves & Sound
- Topic
- Resonance in air columns
- Year
- 2022
- Shift
- 28 Jun Shift 2
- Q Number
- Q24
- Type
- Numerical
- NCERT Ref
- Class 11 Physics Ch 15: Waves
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