Question

The width of two slits in young's experiment are in the ratio of 9 : 4. What will be the intensity ratio of maxima and minima in the interference pattern?

Options

• 1 : 1

• 25 : 1

• 5 : 1

• 3 : 2

Answer 1

25 : 1

Explanation:

Intensity ratio = `(("a + b")^2)/(("a - b")^2)`

∴ Intensity ratio = `(("r + 1")/("r - 1"))^2`

`= ((3/2 + 1)/(3/2 - 1))^2`

Intensity ratio = 25 : 1