Question

the intensity ratio of the maxima and minima in an interference pattern is 4:1. Find the ratio of slit width​

Answer 1

Explanation:

If the width of the slits are A₁ and A₂, the amplitude will also be A

1

andA

2

.

The maximum amplitude, A' will happen when constructive interference happens-

A

′

=(A

1

+A

2

)

The maximum amplitude, A will happen when destructive interference happens-

A=(A

1

−A

2

)

We know that intensity is proportional to the square of amplitude