Advertisements
Advertisements
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)?
Advertisements
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
Name two sound absorbing materials (or objects) which can make our big room less echoey.
What is a stethoscope ? Name the principle on which a stethoscope works.
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 do you mean by reflection of sound? State one condition for the reflection of a sound wave. Name a device in which reflection of sound wave is used.
Name the type of waves that are used for sound ranging. Why are radio waves not audible to us?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
What is meant by an echo? Explain.
