Waves test
Q1. Amplitude at P is not zero but 2.o mm if read from fig.1.1. The phase difference of P and Q can be 0.5 pi or 1.5 pi . Normally a smaller value is chosen i.e o.5 pi
If the amplitude is 4X , the intensity will be 16X greater as I is proportional to square of amplitude.
Q2. The intensity I = 1.1Wm-2 and power received is 4.4 W.
