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प्रश्न
Fill in the blank.
________ produces a sensation in ears.
उत्तर
Sound produces sensation in ears.
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संबंधित प्रश्न
Fig. shows three ways in which a string of length l in an instrument can vibrate.
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 |
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| (i) | (ii) | (iii) |
- Which of the diagram shows the principle note?
- Which vibration has the frequency four times that of the first?
- Which vibration is of the longest wavelength?
- What is the ratio of the frequency of the vibration in (i) and (ii)?
Describe briefly an experiment to prove that vibrating bodies produce sound.
Draw a displacement-time graph for water wave.
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the wave velocity.
The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is 160 ms-1, calculate:
- wavelength
- frequency
- amplitude.
The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
Sound can travel through solids, gases, liquids, and even vacuum.
What types of medium are required for sound to travel?
