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A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m/s.
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Important Questions on Mechanical Wave
MEDIUM
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IMPORTANT
A sonometer wire of length is made of steel. The tension in it produces an elastic strain of . What is the fundamental frequency of steel if density and elasticity of steel are and respectively?
EASY
JEE Main
IMPORTANT
Two travelling waves of equal amplitudes and equal frequencies move in opposite directions along a string. They interfere to produce a stationary wave whose equation is given by . The amplitude of the particle at will be _____
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The first overtone frequency of an open organ pipe is equal to the fundamental frequency of a closed organ pipe. If the length of the closed organ pipe is . The length of the open organ pipe is _____
EASY
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IMPORTANT
A set of tuning forks is arranged in a series of increasing frequencies. If each fork gives beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of last fork is _____ .
EASY
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If a wave gets refracted into a denser medium, then which of the following is true?
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IMPORTANT
The velocity of sound in a gas, in which two wavelengths and produce beats in , will be
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IMPORTANT
A tunning fork of frequency resonates in the fundamental mode with an air column of length in a cylindrical tube closed at one end. When water is slowly poured in it, the minimum height of water required for observing resonance once again is _____ .
(Velocity of sound in air is )
MEDIUM
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IMPORTANT
A longitudinal wave is represented by . The maximum particle velocity will be four times the wave velocity if the determined value of wavelength is equal to
