Chapter 13 - Sound - 2


1. If f is frequency and lambda is wavelenth then speed V lf sound can be found by formula




2. SI unit of intensity of sound is




3. Intensity level of loudest sound which can be heard without pain is




4. Pitch of sound depends upon




5. Speed of sound is greatest in




6. The distance between any two consecutive compression or rarefactions is called




7. Old people cannot hear sounds of frequency




8. Sound energy flowing per second through a unit area held perpendicular to the direction of sound waves is called




9. Audible frequency range is




10. Match the column.................................sound is a form of




11. Match the column.................................sound is produced by




12. Match the column.................................sound consits of




13. Match the column.................................sound propagates through




14. Match the column.................................sound moves faster in




15. Match the column.................................loudness depends upon




16. Match the column.................................pitch depends upon




17. Match the column.................................quality depends upon




18. Match the column.................................intensity depends upon




19. Match the column.................................unpleasant effect




20. Match the column.................................sound of train







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