Diffraction Grating wavelengths

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Homework Help Overview

The discussion revolves around a diffraction grating problem involving light wavelengths of 520 nm and 630 nm passing through a grating with 6000 lines/cm. Participants are exploring the angles for the first and second-order maxima and the conditions under which the 520 nm wavelength no longer produces a visible fringe.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the need to determine which wavelength to use for calculating angles of maxima. There is also a focus on the conditions for the visibility of the 520 nm line and the implications of the grating equation.

Discussion Status

The discussion is ongoing, with participants providing guidance and clarifying the need to calculate angles for both wavelengths. There is acknowledgment of different angles for the first and second maxima, and some participants express uncertainty about their previous attempts.

Contextual Notes

One participant mentions that the problem is related to exam preparation and that they are seeking clarification due to a lack of available tutoring resources. There is a note of previous incorrect answers affecting their understanding.

rojasharma
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light wavelengths of 520nm and 630nm 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?

For part b...what wavlength do i use to find the angles for the first and second oreder maxima?...:S
 
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can anyone help me ...please..
 
Both.
They have different angles in both the first and second maxima.
c)
(10^-2/6000)sintheta =n(520*10^-9)
sintheta cannot exceed one
so calculate the n your own

you should calculate and do homework yourself.
I am to guide you, not to help u finish your homework
 
this is not my homework..It was my homework...but i got it wrong, unfortunately my teacher did not write the correct answer...as my exam is approching...i am preparing for it. I am doing this course through ilc, ilc tutors are not available right now because of the break, that's why i wanted to know the answer to this question.
So for part b) i am supposed to find the first and sec order maxima for both wavelengths?...i see now that's why i got it wrong in first place.
 

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