Advertisements
Advertisements
Question
Why do astronauts talk to each other through radio telephone in space?
Advertisements
Solution
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
RELATED QUESTIONS
Explain with an example, the propagation of sound in a medium.
Choose the correct word/words to complete the following sentence :
When sound travels in a medium ____________
Name the two kinds of waves in form of which sound travels in a medium.
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
A longitudinal wave travels at a speed of 0.3 m s-1 and the frequency of wave is 20 Hz. Find the separation between two consecutive compressions.
Define the term wavelength.
Does ultrasonic in a medium travel faster than the audible sound?
Does light travel faster in air than in water? Why?
How are sound waves produced? How are sound waves transmitted from one place to the other?
