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प्रश्न
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संबंधित प्रश्न
Define amplitude 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 does not change.
How do bats avoid obstacles in their way, when in flight?
What is a stethoscope ? Name the principle on which a stethoscope works.
Define the term Frequency (as applied to sound waves)
What is meant by echo depth sounding?
How are bats able to fly in the dark?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
Waves produced on the surface of the water are formed to move with a velocity of 24 ms−1. If the wavelength of these waves equals 20 cm. find the
(i) frequency (no. of waves produced per second)
(ii) the time period (i.e. the time required to produce one wave) for these waves.
