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प्रश्न
Write the answer in your own words.
Explain with the help of practical examples how sound is propagated through solids.
उत्तर १
Sound is propagated in the form of waves in solids. It can be explained clearly from the below examples:
- Place your ear on one end of a long table. Ask your friend to tap the table from the other end. You can hear the produced sound. Sound reaches your ear after travelling through the table. This indicates that sound can travel through solids and in the form of waves.
- A stethoscope is another example of sound travelling through solids. Doctors use stethoscopes to listen to our heartbeat.
उत्तर २
Sound propagates with maximum speed through the solid medium. We can hear the sound of a train that is far off by placing our ear to the railway track. If we knock at the door. The person inside the room can hear it clearly.
संबंधित प्रश्न
Fill in the blank.
Sound can travel in a ______
Fill in the blank.
Sound requires a ________ for propagation.
Out of solids, liquids and gases :
(a) in which medium sound travels slowest?
(b) in which medium sound travels fastest?
In which medium sound travels faster : air or hydrogen?
Explain why, a ringing bell suspended in a vacuum chamber cannot be heard outside.
Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?
Answer the following question :
How does the speed of sound differ in different media?
Complete the following sentences :
When sound travels in a medium, the particles of medium ___________ but the disturbance ___________.
Describe an experiment to prove that a material medium is necessary for the propagation of sound.
The small to and fro motion is called vibration.
