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Question
Give one example to illustrate forced vibrations.
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Solution
Example: when guitar is played, the artist forces the strings of the guitar to execute forced vibrations.
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In following figure shows A, B , C and D represent test tube each of height 20 cm which are filled with water up to heights of 12 cm, 14 cm, 16cm and 18cm respectively. If a vibrating tuning fork is placed over the mouth if test tube D, a loud sound is heard.
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