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संबंधित प्रश्न
How is the frequency of a stretched string related to its length?
A wire of length 80 cm has a frequency of 256 Hz. Calculate the length of a similar wire under similar tension, which will have frequency 1024 Hz
Name the waves which are used in sonar to find the depth of a sea. Give one reason for their use.
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.
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?
Explain reflection at the boundary of a rarer medium.
Explain Reflection at curved surfaces.
A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. The ratio of its wavelengths in water and air is ______.
