A sinusoidal wave of frequency 75 kHz is to be amplitude modulated by a wave of
frequency 5.0kHz.
(a) Explain what is meant by amplitude modulation.
[2]
(b) On the axes of Fig. 10.1, sketch a graph to show the variation with frequency f of the
power P of the modulated wave. Give labelled values on the frequency axis. [3]
P
Question
Physics
CAIE2016
0 kHz.
(a) Explain what is meant by amplitude modulation.
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [2]
(b) On the axes of Fig. 4.1, sketch a graph to show the variation with frequency f of the power P
of the modulated wave. Label values on the frequency axis.
P