Adouble-slit arrangement produces interference fringes for sodium light (λ = 589 nm) that are 0.48° apart. what is the angular fringe separation if the entire arrangement is immersed in a liquid that has index of refraction n = 1.25?

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.