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प्रश्न
Fill in the blanks with suitable words .
Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ..................
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उत्तर
Wave speed in meters per second equals frequency in hertz multiplied by wavelength in meters.
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संबंधित प्रश्न
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
Fill in the blank.
Sound travels faster in ________ than in liquids.
During a thunderstorm, the sound of a thunder is heard after the lightning is seen. Why?
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
The speed of sound in air at 0°C is 332 m/s. If it increases at the rate of 0.6 m/s per degree, what will be the temperature when the velocity has increased to 344 m/s?
The Velocity of sound is high in gases than liquids.
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V0= 331 ms–1)
On which factors does the speed of sound in the solid medium depend?
Numerical problems:
Two persons are at opposite ends of a steel rod. One strikes the end of the rod with a stone. Find the ratio of time taken by the sound wave in the air and in steel to reach the second person. (Sound of speed in steel = 5960 ms-1, Sound of speed in air = 344 ms-1).
Numerical problems:
A Sound wave travels at a speed of 344 ms-1. If the wavelength is 1.5 cm, what is the frequency of the Wave? Will it be audible?
