Advertisements
Advertisements
प्रश्न
Why do astronauts talk to each other through radio telephone in space?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Name the two kinds of waves in form of which sound travels in a medium.
Describe an experiment to show that in wave motion, only energy is transferred, but particles of medium do not move.
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:
Frequency of sound
How does the following factor affect, if at all, the speed of sound in air:
Temperature of air
How does the following factor affect, if at all, the speed of sound in air:
Moisture in air
Select the correct option:
The number of oscillations passing through a point in unit time is called:
Define the term wavelength.
Does sound require a material medium for transmission?
How will the following factors affect the speed of sound in air:
Pressure of air.
