What is a longitudinal wave?
- A$A$ wave where particles vibrate perpendicular to the direction of wave propagation.
- B$A$ wave where particles vibrate parallel to the direction of wave propagation.
- C$A$ wave that does not require a medium to travel.
- D$A$ wave that travels only in a vacuum.
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$(a)$ Why does the stage of an auditorium have a curved background,curtains,carpets,and a false ceiling?
$(b)$ The sound of a ringing bell inside a vacuum chamber cannot be heard. Why?
$(b)$ The sound of a ringing bell inside a vacuum chamber cannot be heard. Why?
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View SolutionWhat is a crest?
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View SolutionThe loudness of a sound depends upon
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View Solution$(a)$ Mention two practical applications of reflection of sound waves.
$(b)$ How is the pressure variation in a sound wave amplified in the human ear?
$(c)$ In a ripple tank,$10$ ripples are produced per second. If the distance between a trough and a neighbouring crest is $12 \, cm$,calculate the frequency,wavelength,and velocity of the wave.
$(b)$ How is the pressure variation in a sound wave amplified in the human ear?
$(c)$ In a ripple tank,$10$ ripples are produced per second. If the distance between a trough and a neighbouring crest is $12 \, cm$,calculate the frequency,wavelength,and velocity of the wave.
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View SolutionState whether the following statement is true or false:
The wavelength of $5\, MHz$ ultrasound in a medium where the velocity is $1540\, m s^{-1}$ is $0.3\, mm$.
The wavelength of $5\, MHz$ ultrasound in a medium where the velocity is $1540\, m s^{-1}$ is $0.3\, mm$.
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