CH # 13 Sound

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CH # 13 Sound
Sound
  1. 1.     What is sound, how does it produce?
  2. 2.     How we can detect the vibration of sound producing body?
  3. 3.     What is a tuning fork?
  4. 4.     How we may observe the vibration of tuning fork?
  5. 5.     What makes the water splash when a vibrating tuning fork is dip in it?
Nature of Sound
  1. 1.     What is the nature of sound energy?
  2. 2.     Define comprasion of sound waves?
  3. 3.     Define rarefaction of sound waves?
  4. 4.     What is the speed of sound in vaccume,
More than solid and liquid or less then these?
  1. 5.     Where does the pressure is in sound waves, at comprassion or at ratefaction?

Hearing of SOund
  1. 1.     How we can hear sound?
  2. 2.     How many parts an ear has?
  3. 3.     Which part separate the middle ear from outer ear?
  4. 4.     Which part separate the middle ear from inner ear?
  5. 5.     Hair like structure on the cooklia is called?
Characteristics of Sound
  1. 1.      What is meant by loudness?
  2. 2.     On which factors does loudness of sound?
  3. 3.     How the loudness does depend on the amplitude of vibrating body?
  4. 4.     How the loudness does depend on the area of vibrating body?
  5. 5.     How loudness does depend on the distance from the vibrating body?
  6. 6.     Which characteristic of sound doesn’t depend on physical condition of ear?
  7. 7.     Define intensity of sound?
  8. 8.     What is the unit of intensity, how does it derived?
  9. 9.     State Weber Fechner’s law?
  10. 10.            Write down the intensity of faintest and loudest audible sound?
  11. 11.            Define the intensity level of sound?
  12. 12.            What is the unit of intensity level of sound?
  13. 13.            Define the unit of intensity level of sound (bel)?
  14. 14.             Describe relationship between the loudness and intensity of sound?
  15. 15.            Define the decibel scale?
  16. 16.            Find the intensity level of faintest audible sound?
  17. 17.            Define the pitch of sound?
  18. 18.            Show that pitch increases with increase in frequency?
  19. 19.            Define the quality of sound?
  20. 20.            Differentiate between the music and noise?
  21. 21.            Which thing is use to reduce the noise? (Trees)
Speed of Sound
  1. 1.     What is meant by resonance?
  2. 2.     Define stationary waves?
  3. 3.     Write down the formula to find the speed of sound by the resonance opratuce?
  4. 4.     How we can feel that the stationary waves has produced in tube while measuring the speed of sound by resonance opratuse?
Audible Frequency Rang
  1. 1.     What is audible frequency range for normale person?
  2. 2.     What is audible frequency range for old pepole?
  3. 3.     Why we can not hear the sounds of frequency more then 20,000 Hz?
  4. 4.     Which part of ear is defected by use of loud sound?
Ultra-Sonics
  1. 1.     Define ultra sonics?
  2. 2.     How we can find the depth of ocean by ultra sonics?
  3. 3.     where we use ultrasonics in the field of medical sciences?
  4. 4.     where we use the ultrasonics in the technical field?
  5. 5.     How we can find the cracks in the machinary?
  6. 6.     Write down a few uses of ultra sonics in the field of medical sciencs?
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