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Question-1. Define time period
Answer-1: It is the time required to complete one vibration or oscillation. It is reciprocal of frequency and measured in seconds.
Question-2. What is resonance?
Answer-2: Resonance is a phenomenon in which there is a marked increase in the amplitude of a vibrating, body by the influence of a second vibrating body having the same time period as the first.
Question-3. What is an echo?
Answer-3: Echo is the effect produced when sound wave is reflected on striking a solid obstacle like wall or rock.
Question-4. What type of waves are produced in the air column?
Answer-4: Longitudinal or compressional stationary waves.
Question-5. An open end is a node or antinode?
Answer-5: An antinode.
Question-6. Is there a node or antinode at the close end of water level?
Answer-6: A node.
Question-7. Where resonance is produced?
Answer-7: In the air column.
Question-8. Can you call it an organ pipe?
Answer-8: Yes, a closed organ pipe.
Question-9. What is an organ pipe?
Answer-9: The organ pipes are wind pipes in which the air column resonates.
Question-10. What is sound?
Answer-10: Physically the compressional waves produced in a material medium. Psychologically the sensation or hearing produced in the brain.
Question-11. What is the relation between the velocity of sound and the temperature?
Answer-11: Velocity of Sound (V) is directly proportional to square root of teperature (T). For 1oC rise of temperature the velocity of sound increases by 0.6 m/s.
Question-12. What is meant by end-correction?
Answer-12: The distance between the open of the tube and the antinode at the position of tunning fork.
Question-13. How can you find the end correction (E)?
Answer-13: By using the relation E = 0.3 d
Where d is the internal diameter of the tube.
Question-14. What is the fundamental frequency ?
Answer-14: The minimum frequency that can produce resonance.
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