Question

The ratio of intensities of two waves is 1:9 if both waves do interfere, then find the ratio of

maximum and minimum intensities of the resultant wave ?​

Answer 1

Answer:

let the two intensity be I and 9i

max is i1 + i2 + 2√(i1*i2) = 16i

min is i1 + i2 - 2√(i1*i2) = 4i

ratio is 4