Physics
The diagram given below shows three ways in which the string of length l in an instrument can vibrate.
(a) Which of the diagram shows the principal note ?
(b) Which vibration has the frequency four times that of the first ?
(c) Which vibration is of longest wavelength ?
(d) What is the ratio of the frequency of vibrations in diagrams (i) and (ii) ?
Related Questions
How do you tune your radio set to a particular station? Name the phenomenon involved in doing so and define it.
(a) Draw a graph between displacement and time for a body executing natural vibrations
(b) Where can a body execute the natural vibrations?
Explain why strings of different thickness are provided on stringed instrument.
[Hint — Natural frequency of vibration of a stretched string is inversely proportional to the radius (or thickness) of string so notes of different frequencies can be obtained by producing vibrations in the different strings]
What are the damped vibrations? How do they differ from free vibrations? Give one example of each.