Advertisements
Advertisements
प्रश्न
Name the type of waves which are used by astronauts to communicate with one another on moon (or in outer space).
Advertisements
उत्तर
Radio waves are used by astronauts to communicate with one another on moon because radio waves do not require any material medium for its propagation.
APPEARS IN
संबंधित प्रश्न
Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
Sound cannot travel in vacuum.
Can two person hear each other on moon’s surface ? Give reason to support your answer.
Through which of the following materials can sound travel? wood, air, water, steam, ice, hydrogen, steel, diamond.
State three characteristics of the medium required for propagation of sound?
Answer the following question :
How does the speed of sound differ in different media?
Can sound propagate in solids and liquids?
Can we hear sounds of frequencies:
More than 20 KHZ
Sound cannot travel in ______.
______ is the number of vibrations of a particle in the medium, in one second
