Advertisements
Advertisements
प्रश्न
Name the unit in which the loudness of sound is expressed.
Advertisements
उत्तर
Unit of the loudness of sound is expressed in decibel(dB)
APPEARS IN
संबंधित प्रश्न
In which units is the loudness of sound measured?
A person standing between two vertical cliffs and 480 m from the nearest cliff shouts. He hears the first echo after 3s and the second echo 2s later. Calculate:
1)The speed of sound.
2) The distance of the other cliff from the person
Name three characteristics of a musical sound.
Name three characteristics of a musical sound.
Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound board?
How does the two sounds of same loudness and same pitch produced by different instruments differ? Draw diagrams to illustrate your answer.
It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.
(i) Name the characteristics of sound associated with the above obervation.
(ii) Give a reason for the above observation.
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
