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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Write the approximate speed of sound in water . - Physics

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प्रश्न

Write the approximate speed of sound in water . 

एका वाक्यात उत्तर

उत्तर

Medium - Liquid (Water) Speed of sound - 1500 `"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 33.2

संबंधित प्रश्‍न

Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?


Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.


A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?


Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.


Fill in the blanks with suitable words .

Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ..................


The maximum speed of vibrations which produce audible sound will be in :


Sunil is standing between two walls. The wall closest to him is at a distance of 660 m. If he shouts, he hears the first echo after 4 s and another after another 2 seconds.

  1. What is the velocity of sound in air?
  2. What is the distance between the two walls? 

Numerical problem.

A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard? (Given g = 10 m s–2 and speed of sound = 340 m s–1)


The speed of sound in a gaseous medium depends on the nature of the gas.


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).


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