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- Echo is one of the phenomena of reflection of sound. When we go to the mountain top and shout loudly, we hear our own sound after sometime.
- The sound from our ear is carried to our brain, Where it is interrupted and we are able to hear and identify the sounds. Which part of the ear carries the sound message to the brain?
- There are different types of sound, some are pleasing and some are irritating. The different sounds are given different names. What do we call a sound that is pleasing to us?
- The sound is produced by the vibration in the medium. The vibration of the sound depends on the nature of medium. The number of times a waves vibrates in one second in a medium is called its____.
- In which one of the following medium sound will travel faster?
- There are various phenomenon of reflection of sound. The reverberation is one of them. In case of reverberation the sound is not distinct and cannot be understood properly.
- Maradona was standing on the cliff, 825 m from the point, from where the gun was fired. After how long he will hear the echo? Speed of sound is taken as 330 m/s.
- How does the sound produced by a vibrating object in a medium reach your ear?
- Archimedes principal has wide application. It can be used to find the volume of the solid, which is immersed in the liquid or the relative density of the liquid.
- Take four jars with different amount of water. Hit the rim of the jars with the pencil. In which one of the following case, the intensity of sound will be maximum?
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