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प्रश्न
Why do astronauts talk to each other through radio telephone in space?
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उत्तर
Sound can not travel through vacuum. There is no material medium in the space for propagation of sound. Hence astronauts talk to each other through radio telephone in space. In radio telephone, message of one astronauts reach to the other with the help of radio waves, which can travel through vacuum.
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संबंधित प्रश्न
Describe a simple experiment which demonstrates that the sound produced by a tuning fork is due to vibrations of its arms.
Name the two kinds of waves in form of which sound travels in a medium.
Explain the terms crest and trough in relation to a transverse wave.
How does the speed of sound change with change in (i) amplitude and (ii) wavelength, of sound wave?
How does the following factor affect, if at all, the speed of sound in air:
Temperature of air
Complete the following sentence :
A longitudinal wave is composed of compression and ____________.
Complete the following sentence :
A transverse wave is composed of crest and ____________.
Select the correct option:
The wavelength is the linear distance between the:
Can sound travel through vacuum?
How will the following factors affect the speed of sound in air:
Humidity.
