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प्रश्न
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उत्तर
The propagation of wave through a medium due to the repeated oscillatory motion of the particles of the medium about their mean position, the motion being handed over from one particle of the medium to the next particle progressively is referred to as wave motion.
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संबंधित प्रश्न
The human ear can detect continuous sounds in the frequency range from 20 Hz to 20,000 Hz. Assuming that the speed of sound in air is 330 ms1 for all frequencies; calculate the wavelengths corresponding to the given extreme frequencies of the audible range
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
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.
Name two sound absorbing materials (or objects) which can make our big room less echoey.
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.
State two factors on which the natural frequency of a body depends.
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
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 ______.
Match the following:
| 1. | Stethoscope | a. | Repeated reflections |
| 2. | Echogram | b. | Multiple reflections |
| 3. | SONAR | c. | Ultrasonic waves |
| 4. | Reverberation | d. | Speed of underwater objects |
