(a) A particular transmitter of Aakashvani broadcasts at 420.5 m wavelength. Given the speed of radio waves 3 x 108 m s^-1. Calculate the frequency at which the radio station broadcasts its programme


#1

(a) A particular transmitter of Aakashvani broadcasts at 420.5 m wavelength. Given the speed of radio waves 3 x 108 m s^-1. Calculate the frequency at which the radio station broadcasts its programme.
(b) What is the direction of oscillations of the medium particles through which a :
(i) transverse wave is propagating ?
(ii) longitudinal wave is propagating ?


#2

(a) Given: X = 420.5 m,
V = 3 x 10^8 m s^-1,
v = ?
Using the expression V = vX, we have v = V/X = 3 x 10^8 /420.5 = 7 x 10^5 Hz
(b) (i) The partfcles oscillate perpendicular to the direction of propagation of the wave.
(ii)The particles oscillate parallel to the direction of propagation of the wave.