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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (मराठी सेमी-इंग्रजी) इयत्ता ९ वी

Fill in the blank and explain. The velocity of sound in steel is ______ than the velocity of sound in water.

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प्रश्न

Fill in the blank and explain.

The velocity of sound in steel is ______ than the velocity of sound in water.

रिकाम्या जागा भरा
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उत्तर

The velocity of sound in steel is greater than the velocity of sound in water.

Explanation:

Speed of sound refers to the speed of sound waves travelling in air which is different in different mediums. It travels the slowest in gases, a little faster in liquids, and the fastest in solids. The higher the density of the medium, the faster will be the speed of sound and vice versa. Thus, steel being solid and water being liquid, sound speed in steel is more than sound speed in water.

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पाठ 12: Study of Sound - Exercise [पृष्ठ १३७]

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बालभारती Science and Technology [English] Standard 9 Maharashtra State
पाठ 12 Study of Sound
Exercise | Q 1. b. | पृष्ठ १३७

संबंधित प्रश्‍न

Write true or false for a given statement.

Sound can travel in a vacuum.


Select the correct alternative : 

The speed of sound in water is


Write the approximate speed of sound in water . 


Write the approximate speed of sound in steel.


A jet aircraft flies at a speed of 410 m/s. What is this speed known as?


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.


When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?


If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be :


A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a city 


The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.


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? 

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?


Write the formula for speed of sound in a gas using Laplace correction.


The velocity of sound in solid is ______ than the velocity of sound in air.


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)


A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is _____.


The Velocity of sound is high in gases than liquids.


An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 ms–1?


Assertion: The speed of sound in air is less than the speed of sound in solid.
Reason: If we increase the temperature of medium, the speed of sound increases in any medium.


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