Ok sorry. But this is all the relevant formulas for this. My working I’ll show more. But I have no clue for this so I’m getting a completely wrong answer(not even close to the options).
Well, I took it as: wavelength= 690x10^-9 m
D = 300 x 10^-3 m
So I tried substituting in the equation but I didn’t know what angle to take. So yeah that’s where I’m stuck.
Homework Statement
Monochromatic light of wavelength 690nm passes through a diffraction grating with 300 lines per mm, producing a series of maxima on a screen. What is the greatest number of maximas that can be observed?
A) 4
B) 5
C) 8
D) 9
Homework Equations
n*wavelength = d*sin x
The...