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
Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A b...In YDSE, both slits are covered by transparent slabs. Upper slits is covered by slab of μ = 1.5 and thickness t and...An underwater sonar source operating at a frequency of 60 kHz directs its beam towards the surface. If velocity of sound...If tan α and tan β are roots of the equation x2 + px + q = 0 with p ≠ 0, then -...A stretched string is 1 m long. Its mass per unit length is 0.5 g/m. It is stretched with a force of 20 N. It plucked at...