Sounds 1

1. Sound originates from vibrating bodies. True or False?

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2. Sound travels faster in HOT air than in COLD air?

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3. The velocity of sound in air:

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4. Sound wave is which type of a wave?

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5. The speed of sound in air is about?

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6. How do you calculate the distance in pulse echo technique?

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7. Which of the following is a factor affecting velocity of sound in air?

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8. In which of the following medium is sound transmitted fastest?

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9. How is sound energy propagated from a vibrating object?

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10. Solids transmit sound at a speed of?

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11. The velocity of sound in fresh water is?

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12. Why are concert halls and broadcasting studios made of walls of absorbent materials such as cotton wool or rubber?

Question 12 of 23

13. In which of the following medium is sound transmitted slowest?

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14. The angle of reflection of a sound wave is equal to the angle of incidence?

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15. Why is a sound wave a longitudinal wave?

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16. Does a vacuum transmit sound waves?

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17. Which of the following is the most common use of reflection of sound?

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18. Which among the following is an application of pulse echo technique?

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19. Sound waves obey the laws of reflection?

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20. Define reverberation?

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21. The velocity of sound in salty water is?

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22. Reflected sound is called (from an obstacle)?

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23. Which of the following is NOT a source of sound?

Question 23 of 23