Sounds 1

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

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

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

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

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5. Sound waves obey the laws of reflection?

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6. Sound wave is which type of a wave?

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7. Why is a sound wave a longitudinal wave?

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

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9. Solids transmit sound at a speed of?

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10. Does a vacuum transmit sound waves?

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

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12. The velocity of sound in salty water is?

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

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14. Define reverberation?

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

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

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

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

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19. The speed of sound in air is about?

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

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21. The velocity of sound in air:

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22. The velocity of sound in fresh water is?

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

Question 23 of 23