Question

Two light waves of amplitudes a and b interfere with each other. Obtain the

ratio of intensities of a maxima to that of a minima.​

Answer 1

Answer:

I max (a + b)

--------- = -----------

I min (a - b)

Explanation:

we know that

intensity (I) is proportional to A^2

see the above image for formulae of intensity

substitute the proportionality in the formulae

so

I max (a + b)

--------- = -----------

I min (a - b)