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प्रश्न
The following diagram shows three ways in which the string of an instrument can vibrate.
(a) which of the diagram shows the principal note?
(b) which has the frequency four times that of the first?
(c) what is the ratio of the frequency of the vibration in (i) and (ii)?
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उत्तर
(a) (i) Diagram is showing the principal note.
(b) (iii)Diagram has frequency four times that of the first.
(c) Ratio is 1:2
संबंधित प्रश्न
Define frequency term in relation to a wave.
What is the condition necessary for an echo to be heard distinctly?
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey
Explain how is the principle of echo used by
(a) The bat during its flight at night,
(b) The dolphin to locate small fish as its prey.
What are infrasonic waves?
Write the approximate value of the speed of sound in air.
What do you understand by the ‘Echolocation system of Dolphins’?
What are fishing boats?
