Which one of the following does not consist of transverse waves ?
(a) light emitted by a CFL.
(b) TV signals from a satellite.
(c) ripples on the surface of a pond
(d) musical notes of an orchestra
Which of the following vibrates when a musical note is produced by the cymbals in an orchestra ?
(a) stretched strings
(b) stretched membranes
(c) metal plates
(d) air columns
Fig. 7.22 shows four waves A, B, C, and D.
Name the wave which shows
(a) a note from a musical instrument,
(b) a soft note,
(c) a shrill note