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Physics
The speed of a wave is 350 ms-1. Find the wavelength of the wave whose frequency is 700 Hz.
Chapter: [7] Sound
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Distinguish between crest and trough.
Chapter: [7] Sound
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Which has a greater speed: mechanical wave or electromagnetic wave?
Chapter: [7] Sound
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Can sound waves pass through vacuum?
Chapter: [7] Sound
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What are characteristics of a wave motion?
Chapter: [7] Sound
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What is the range of hearing for a normal person?
Chapter: [7] Sound
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Name the principle used to find the depth of a sea.
Chapter: [7] Sound
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Give two applications of supersonics.
Chapter: [7] Sound
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What are the lowest and highest limits of frequencies of sound which is audible to a human ear?
Chapter: [7] Sound
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What do you understand by sound signalling?
Chapter: [7] Sound
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Distinguish between compression and rarefaction.
Chapter: [7] Sound
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Write two differences between transverse and longitudinal waves.
Chapter: [7] Sound
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Fig. shows three ways in which a string of length l in an instrument can vibrate.
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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)?
Chapter: [7] Sound
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