Advertisements
Advertisements
प्रश्न
What is an echo
Advertisements
उत्तर
The sound heard after reflection from a distant obstacle after the original sound has ceased is called an echo.
APPEARS IN
संबंधित प्रश्न
State one important property of waves used for echo depth sounding.
Smaller the membrane, .................. is the pitch.
When sound travels in form of a wave
Obtain relationship between the time period and frequency.
How is loudness related to the amplitude of wave?
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
Name the factors which determine the loudness of a note.
The same musical note when played on a piano and when played on a flute sounds different.
The diagram below shows three ways in which the string of an instrument can vibrate.
(i) Which of the above diagrams shows the fundamental note?
(ii) Which has the frequency 4 times that of the fundamental?
(iii) State the ratio between the frequency of the first and second.
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
