State two practical uses or applications of echoes.
(N/A) Echoes are used in the following ways:
$1$. $SONAR$ ($Sound$ $Navigation$ $And$ $Ranging$) systems use echoes to determine the depth of the sea and to locate underwater objects like submarines,shipwrecks,or icebergs.
$2$. Medical ultrasound imaging uses echoes of high-frequency sound waves to create images of internal organs,such as monitoring the development of a fetus during pregnancy.
$1$. $SONAR$ ($Sound$ $Navigation$ $And$ $Ranging$) systems use echoes to determine the depth of the sea and to locate underwater objects like submarines,shipwrecks,or icebergs.
$2$. Medical ultrasound imaging uses echoes of high-frequency sound waves to create images of internal organs,such as monitoring the development of a fetus during pregnancy.
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Similar Questions
$A$ man stands between two high-rise buildings and blows a whistle. He hears two successive echoes after $0.4 \, s$ and $2.0 \, s$. Calculate the distance between the buildings. (Assume the speed of sound $v = 332 \, m/s$)
Difficult
View Solution$(a)$ List in tabular form the distinguishing features between longitudinal waves and transverse waves. Give an example of each.
$(b)$ State and define the characteristics associated with sound waves.
$(b)$ State and define the characteristics associated with sound waves.
Medium
View Solution$(a)$ $A$ particular transmitter of Aakashvani broadcasts at $420.5\, m$ wavelength. Given the speed of radio waves $3 \times 10^{8}\, m s^{-1}$. Calculate the frequency at which the radio station broadcasts its programme.
$(b)$ What is the direction of oscillations of the medium particles through which a
$(i)$ transverse wave is propagating?
$(ii)$ longitudinal wave is propagating?
$(b)$ What is the direction of oscillations of the medium particles through which a
$(i)$ transverse wave is propagating?
$(ii)$ longitudinal wave is propagating?
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View Solution$(a)$ Why are sound waves called mechanical waves? List two practical applications of reflection of these waves.
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$(b)$ $A$ stone is dropped from the top of a tower $125 \ m$ high into a pond of water at the base of the tower. When is the splash heard at the top? $(g = 10 \ m s^{-2}$ and speed of sound $= 340 \ m s^{-1})$
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View SolutionState whether the following waves are transverse or longitudinal waves :
$(i)$ light waves
$(ii)$ waves in water and
$(iii)$ sound waves.
$(i)$ light waves
$(ii)$ waves in water and
$(iii)$ sound waves.
Easy
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