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प्रश्न
Explain Why are stringed musical instruments provided with large sound boxes?
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उत्तर
The larger soundbox contains a large amount of trapped air. When the vibrations of the vibrating string are impressed upon the air, it starts vibrating with forced vibrations. As a large volume of enclosed air vibrates, a loud sound is produced.
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Name the phenomenon involved in tunning a radio set to a particular station
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1) Name the type of vibrations taking place in pendulums B and D?
2) What is the state of pendulum C?
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2) Name the phenomenon when the paper rider flies off.
3) Why does the paper rider fly off when the stem of tuning fork B is touched to the box?
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(ii) Give the reason for your observation in each case.
(iii) State the principle illustrated by the above experiment.
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