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प्रश्न
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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.
What is a megaphone ? Name the principle on which a megaphone works.
What is a soundboard ? Explain the working of a soundboard with the help of a labelled diagram.
Define the term Frequency (as applied to sound waves)
Why will an echo not be heard when the distance between the source of the sound and the reflecting surface is 10 m?
What are fishing boats?
Draw a diagram representing a wave of amplitude 4 cm and wavelength 2 m. If the frequency of the wave is 150 Hz, calculate its velocity.
Explain Reflection at curved surfaces.
