The intensity ratio of two waves is `9:1`. If they produce interference, the ratio of maximum to minimum intensity will be

Options

A. `10:8`
B. `9:1`
C. `4:1`
D. `2:1`

Answer

C

Explanation

`I_(1)/I_(2)=a_(1)^(2)/a_(2)^(2)=9/1" or "a_(1)/a_(2)=3/1" "therefore I_(max)/I_(min)=((3+1)^(2))/((3-1)^(2))=16/4=4/1`