Question

7.

A. If I use a Vanadate laser operation at 530 nm (green) through two slits that are 0.5mm apart, what is the angle of the m=1 maxima (bright fringe)? (5 pts).

B. What is the second minima (dark fringe)? (5 pts).

Answer 1

Solution:

Given data

The wavelength of the vanadate laser,

The distance between the slits,

(a)

The condition for resulting a maxima is

Here, it is given that m = 1

Now, substitute the known values in the following equation

(b)

The condition for the minima is given by

Here, we have to calculate the angle for second minima i.e. m = 2

Substitute the known values in the equation