A message signal x(t) is amplitude modulated with carrier c(t). x(t) = 2 sin 600pt c(t) = 8 cos (2p x 10^{6}t) such that the modulated signal is (8 + 2 sin 600pt) [cos 2p x 10^{6}t] The total side band power is:

The cross section of a JFET is shown in the following figure. Let V_{a} be - 2 V and let V_{p} be the initial pinch-off voltage. If the width W is doubled (with other geometrical parameters and doping levels remaining the same), then the ratio between the mutual transconductances of the initial and the modified JFET is