Easy question on diffraction of light

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    Diffraction Light
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Homework Help Overview

The discussion revolves around a problem related to the diffraction of light, specifically involving two wavelengths and a diffraction grating with a specified number of lines per millimeter. Participants are exploring how many orders of diffraction will be observable for the given wavelengths.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to calculate the number of observable diffraction orders using the provided wavelengths and grating information. Some participants confirm the calculations and express agreement with the approach taken.

Discussion Status

The discussion appears to be progressing positively, with participants validating the calculations and expressing hope for correctness. However, there is no explicit consensus on the final answer, as the original poster seeks confirmation.

Contextual Notes

The problem is framed within the constraints of a homework assignment, and the participants are careful to engage with the calculations without providing definitive solutions.

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[SOLVED] Easy question on diffraction of light please help!

Homework Statement


Wavelengths are; 1 - 520nm
Wavelength 2 - 520.8nm
Diffraction grating - 400 lines per mm
How many orders will the lines be seen in?


Homework Equations


N = dsin0/lamda


The Attempt at a Solution



d = 1/4 X 10^5 = 25 X10^-7m
25 X 10^-7 / 520 X 10^-9 = 4.8
So is the answer 4? for the first wavelength (520nm)
 
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Your work looks good to me.
 
I got 4.80769, so your math is correct.
 
Thanks - hope its right!
 

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