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संबंधित प्रश्न
How is the frequency of a stretched string related it’s tension?
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
Define amplitude term in relation to a wave.
Define wavelength term in relation to a wave.
What is a stethoscope ? Name the principle on which a stethoscope works.
Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.
A radio signal, sent towards the surface of the moon, is received in 2.5 seconds. If the speed of the radio waves is 3 × 108 ms−1, find the distance of the moon from the earth.
(i) A man stands at a distance of 68 m from a cliff and fires a gun. After what time interval will he hear the echo, if the speed of sound in air is 340 ms−1?
(ii) If the man had been standing at a distance of 12 m from the cliff would he have heard a clear echo?
Explain reflection at the boundary of a rarer medium.
