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qUESTIONS

A stationary wave is represented by y = 10 sin (π/4)cos(20 πt) where x and y are in cm and t in second. The distance between two consecutive nodes is

A simple harmonic progressive wave is given by y0sin2π=(nt- x/λ). If the wave velocity is (1/8)th the maximum particle velocity, then the wavelength is

A progressive wave of frequency 50 Hz is travelling with velocity 350 m/s through a medium. The change in phase at a given time interval of 0.01 s is

A uniform wire of length ‘L’, diameter ‘D’ and density ‘p’ is stretched by a tension ‘T’. The correct relation between its fundamental frequency of vibration ‘f’, the length ‘L’ and the diameter ‘D’ is

Two sound waves of slightly different frequencies propagating the same direction produce beats due to

A string in a musical instrument is 50 cm long and its fundamental frequency is 800 Hz. Keeping the tension applied to the string same, the change in the length to produce sound note of fundamental frequency will be

Two waves are superimposed whose ratio of intensities is 9:1. The ratio of maximum and minimum intensity is

A hollow pipe of length 0.8 m is closed at one end. At its open end, a 0.5 m long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of pipe. If the tension in the string is 50 N and speed of sound in air is 320 m/s, the mass of the string is

A uniform metal wire has length ‘L’, mass ‘M’ and cross- sectional area ‘A’. It is under tension ‘T’ and ‘V’ is the speed of transverse wave along the wire. The density of the wire is

An open organ pipe of length ‘l’ vibrates in its fundamental mode. The pressure variation is maximum

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