Two waves represented by the following equations are travelling in the same medium
y1 = 5 sin 2π ( 75 t − 0.25 X )
y2 = 10 sin 2π ( 150 t − 0.50 X ) The intensity ratio I1 / l2 of the two waves is : −
a. 1 : 2
b. 1 : 4
c. 1 : 8
d. 1 : 16