At nodes in stationary waves
A string vibrates according to the equation y=5sin (2πx/3) cos20πt , where x and y are in cm and t in sec. The distance between two adjacent nodes is
A string fixed at both the ends is vibrating in two segments. The wavelength of the corresponding wave is
A 1 cm long string vibrates with fundamental frequency of 256 Hz. If the length is reduced to 1/4 cm keeping the tension unaltered, the new fundamental frequency will be
Standing waves are produced in a 10 m long stretched string. If the string vibrates in 5 segments and the wave velocity is 20 m/s, the frequency is
The velocity of waves in a string fixed at both ends is 2 m/s. The string forms standing waves with nodes 5.0 cm apart. The frequency of vibration of the string in Hz is
Which of the following is the example of transverse wave
Two similar sonometer wires given fundamental frequencies of 500Hz. These have same tensions. By what amount the tension be increased in one wire so that the two wires produce 5 beats/sec
If the tension of sonometer’s wire increases four times then the fundamental frequency of the wire will increase by
If vibrations of a string are to be increased by a factor of two, then tension in the string must be made
Four wires of identical length, diameters and of the same material are stretched on a sonometre wire. If the ratio of their tensions is 1 : 4 : 9 : 16 then the ratio of their fundamental frequencies are
A tuning fork vibrating with a sonometer having 20 cm wire produces 5 beats per second. The beat frequency does not change if the length of the wire is changed to 21 cm. the frequency of the tuning fork (in Hertz) must be
A stretched string of length l fixed at both ends can sustain stationary waves of wavelength λ given by
If you set up the seventh harmonic on a string fixed at both ends, how many nodes and antinodes are set up in it
If you set up the ninth harmonic on a string fixed at both ends, its frequency compared to the seventh harmonic
Frequency of a sonometer wire is n. Now its tension is increased 4 times and its length is doubled then new frequency will be
A device used for investigating the vibration of a fixed string or wire is
A string on a musical instrument is 50 cm long and its fundamental frequency is 270 Hz. If the desired frequency of 1000 Hz is to be produced, the required length of the string is
The tension in a piano wire is 10N. What should be the tension in the wire to produce a note of double the frequency
To increase the frequency from 100 Hz to 400 Hz the tension in the string has to be changed by
In order to double the frequency of the fundamental note emitted by a stretched string, the length is reduced to3/4th of the original length and the tension is changed. The factor by which the tension is to be changed, is
A string of 7 m length has a mass of 0.035 kg. If tension in the string is 60.5 N, then speed of a wave on the string is
A second harmonic has to be generated in a string of length l stretched between two rigid supports. The point where the string has to be plucked and touched are
Transverse waves of same frequency are generated in two steel wires A and B. The diameter of A is twice of B and the tension in A is half that in B. The ratio of velocities of wave in A and B is
A sonometer wire resonates with a given tuning fork forming standing waves with five antinodes between the two bridges when a mass of 9 kg is suspended from the wire. When this mass is replaced by a mass M, the wire resonates with the same tuning fork forming three antinodes for the same positions of the bridges. The value of M is
