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
Name the factor that determines Quality of the note
Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?
Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their
- loudness,
- pitch?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of frequencies?
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.
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
Name the factors which determine the quality of a note.
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
The loudness of a sound depends on its pitch.
