1. Do sound waves undergo reflection, refraction and polarization phenomena?
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2. Do sound waves need a medium to travel from one point to other in space? What properties of the medium are relevant?
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3. Although the density of solid is high, the velocity of sound is greater in solid, explain?
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4. Explain why the flash of light reaches the earth before the sound coming from the same thunder.
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5. What discrepancy was there in Newton's formula for the velocity of sound in the air?
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6. What is laplace correction in the velocity of sound? Why was it necessary?
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7. Explain why the velocity of sound in solids is greater than that in gases, though the densities of solid are greater than that of gases.
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8. A person walking on a railway line hears two sounds for the same explosion occuring far away, why?
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9. When a person hammers at one end of a metal pipe and a listener places his ear at the other end. two distinct sounds are heard. Why?
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10. When two persons sitting in a boat or ship talk with each other sounds can be heard over long distances why?
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11. When an explosion occurs at a distance, the sound is heard many times and for longer time why?
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12. What causes the rolling sound of thunder?
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13. Velocity of sound increases in a cloudy day why?
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14. Velocity of sound in hydrogen is greater than that in oxygen why?
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15. Does the velocity of sound in a gas depend upon the atomicity of gas?
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16. What is the effect of frequency or wavelength on the velocity of sound?
ans: The velocity of sound doesn't depend on the frequency.
17. Why does sound travel faster on a rainy day than on a dry day?
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Is velocity of sound more in damp air or dry air?
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18. Why sound made at a distance can be heard distinctly at night than at day time?
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19. Do sound waves need a medium to travel from one point to other point in space? What properties of the medium are relevent?
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20. Why do the stages of large auditoriums have curved backs?
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21. Differentiate between forced vibration and free vibration?
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22. What do you mean by resonance?
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23. What are shock waves?
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24. Point out the difference between damped and un-damped oscillations.
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25. Why is some degree of reverberation considered useful?
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26. When sound waves travel through a medium, does the temperature at various points remain constant? Explain.
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27. By what factor does the velocity of transverse wave in string change when the tension is increased by four times?
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Thank you very much for reading.
Best of luck for your exams.
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