//Example 27.4
lambda=550*10^-9;//Wavelength (m)
m2=2;//Order of interference
theta2=45;//Angle for second diffraction minimum (deg)
D=m2*lambda/sind(theta2);//Slit width (m)
printf('a.Width of the slit = %0.2e m',D)
m1=1;//Order of interference
theta1=asind(m1*lambda/D);//Angle for first diffraction minimum (deg)
printf('\nb.Angle for the first minimum produced = %0.1f deg',theta1)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest