Advertisements
Advertisements
प्रश्न
Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.
Advertisements
उत्तर
When the stem of a vibrating fork is pressed against the table top, the tuning fork forces the table top to vibrate with its own frequency. These forced vibrations send forth a greater energy and produce large sound. Now, if the natural frequency of the table is equal to that of the vibrating fork, resonance occurs and a louder sound is heard.
APPEARS IN
संबंधित प्रश्न
Smaller the membrane, .................. is the pitch.
In a piano, pitch is decreased by
State three factors on which loudness of sound heard by a listener depends.
Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.
State the factors that determine
(a) the pitch of a note.
(b) the loudness of the sound heard.
(c) the quality of the note.
State three factors on which loundess of sound heard by a listener depends.
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
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.
