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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Write the approximate speed of sound in air. - Physics

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प्रश्न

Write the approximate speed of sound in air.

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उत्तर

Medium - Gas (Air)  Speed of sound - 330 `"m s"^-1`

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पाठ 6: Sound - Short/Long Answer Questions

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सेलिना Concise Physics [English] Class 7 ICSE
पाठ 6 Sound
Short/Long Answer Questions | Q 33.1

संबंधित प्रश्‍न

A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?


If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?


Which term is used to denote a speed greater than the speed of sound?


Calculate the frequency of a wave whose time-period is 0.02 s.


The speeds of sound in four different media are given below. Which of the following is the most likely speed in m/s with which the two under water whales in a sea talk to each other when separated by a large distance?


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?


Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her?

(The velocity of sound in air is 340 m/s.)


Hydrogen gas is filled in two identical bottles, A and B, at the same temperature. The mass of hydrogen in the two bottles is 12 gm and 48 gm respectively. In which bottle will sound travel faster? How many times be as fast as the other?


The thunder of cloud is heard 9.8 seconds later than the flash of lightning. If the speed of sound in air is 330 ms–1, what will be the height of the cloud?


Establish the relationship between the speed of sound, its wavelength and frequency. If the velocity of sound in air is 340 m s–1, calculate

(i) wavelength when the frequency is 256 Hz.

(ii) frequency when the wavelength is 0.85 m


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