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## Homework Statement

Light with wavelengths of 520 nm and 630 nm passes through a diffraction grating that contains 6000lines/cm.

a) Sketch a diagram of the image produced from m = 0 to m = 2. Label the order of each fringe.

b) Calculate the angles for the first and second order maxima that would appear on the screen.

c) What is the lowest value of m for which the 520 nm line no longer exists? Justify your answer.

d) Compare the appearance of the fringe at m=0 with all the others.

## Homework Equations

SinΘ= mΛ/d

d= 1m/6.0x10^5lines

d=1.67x10^-6m/line

## The Attempt at a Solution

I am taking a learn at home course and this material is very new to me. I don't want to be told answers I'm just having a lot of difficulty grasping the entire concept of light if I'm being honest.

I have used the equation to solve for b and c.

The issue I'm having, perhaps I am over thinking it, is that I do not know how to sketch the diagram of the maxima and fringes. How am I to know the distances between fringes and the maxima? I tried to look through other equations in previous chapters but they require another variable, L, which I do not have. Of course without the sketch I cannot solve D.

I was just hoping someone could help guide me into figuring it out on my own.

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