Physics
Name the factor that determines:
(i) Loudness of the sound heard.
(ii) Quality of the note.
(iii) Pitch of the note.
Related Questions
A ray of light travels from water to air as shown in the diagram given below:
(i) Copy the diagram and complete the path of the ray. Given the critical angle for water is 48°.
(ii) State the condition so that total internal reflection occurs in the above diagram.
The diagram below shows a point source P inside a water container. Four rays A, B, C, D starting from the source P are shown up to the water surface.
(i) Show in the diagram the path of these rays after striking the water surface. The critical angle for water air surface is 48°.
(ii) Name the phenomenon which the rays B and D exhibit.
(i) What are damped vibrations?
(ii) Give one example of damped vibrations.
(iii) 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.
(i) A wire of length 80 cm has a frequency of 256 Hz. Calculate the length of a similar wire under similar tension, which will have frequency 1024 Hz.
(ii) A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.
Calculate the speed with which this sound travels.
What difference would be felt by a listener between the above sound and another sound travelling at the same speed, but of wavelength 2.6 m?