Wave motionHard
Question
A metal wire of linear mass density of 9.8 gm is stretched with a tension of 10 kg-wt between two rigid supports 1 metre apart. The wire passes at its middle point between the poles of a per magnet and it vibrates in resonance when carrying an alternating current of frequency n. The frequency n of the alternating source is
Options
A.50 Hz
B.100 Hz
C.200 Hz
D.25 Hz
Solution
Frequency of oscillation n = 
=
× 102 =
× 102 = 50Hz

=
× 102 =
× 102 = 50HzCreate a free account to view solution
View Solution FreeMore Wave motion Questions
A star is going far away from earth with velocity. 105 m/s. If wavelength of its spectrum line is 5700 then doppler̸...Observer and source are stationary air is blowing from source to listener. If velocity of air increases, the intensity w...The temperature at which speed of sound in air becomes double of its value at 27oc...The displacement equation of a progressive wave along Y - axis is : Y = 5 sin (60t + 2x), here x, y are in metre and t i...The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature T (Kelvin) and mass m, i...