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संबंधित प्रश्न
Define wavelength term in relation to a wave.
A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which changes.
State two factors on which the speed of a wave travelling in a medium depends.
State the use of echo by a bat, dolphin and fisherman.
Name the waves which are used in sonar to find the depth of a sea. Give one reason for their use.
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)?
Name the principle on which a soundboard works.
Name the type of waves that are used for sound ranging. Why are radio waves not audible to us?
Explain why, the ceilings of concert halls are curved.
