Suppose that you have a reflection diffraction grating with n= 125 lines per millimeter. light from a sodium lamp passes through the grating and is diffracted onto a distant screen. part a
two visible lines in the sodium spectrum have wavelengths 498\rm nm and 569 \rm nm. what is the angular separation \delta \theta of the first maxima of these spectral linesgenerated by this diffraction grating?
part b
how wide does this grating need to be to allow you to resolvethe two lines 589.00 and 589.59 nanometers, which are a well knownpair of lines for sodium, in the second order (m=2)?

Imagine an isolated positive point charge q (many times larger than the charge on a single proton). there is a charged particle a (whose charge is much smaller than charge q) at a distance from the point charge q. on which of the following quantities does the magnitude of the electric field created by charge q at particle a's position depend? check all that apply.the type of the charge on the charged particle athe relative orientation between q and a (while the distance between q and a is fixed)the specific location of the charged particle a (while the distance between q and a is fixed)the amount of the charge on the point charge qthe specific location of the point charge q (while the distance between q and a is fixed)the distance between the point charge q and the charged particle athe amount of the charge on the charged particle a