No.of orders of diffraction visible

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Homework Help Overview

The discussion revolves around the topic of diffraction orders in the context of a physics problem involving the equation dsinθ=nλ. Participants are exploring how changes in the distance between slits affect the number of visible diffraction orders.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning how the number of diffraction orders changes with varying slit distances and are attempting to understand the implications of the formula. There are repeated inquiries about the limits of angles for diffraction orders.

Discussion Status

The discussion is active, with participants sharing their interpretations and clarifying their understanding of the relationship between slit distance and diffraction orders. Some guidance has been provided regarding the relationship between the slit distance and the number of orders.

Contextual Notes

There is an ongoing exploration of the implications of the formula and the conditions under which the number of orders can be determined, particularly regarding the limits of angles from +π/2 to -π/2.

Janiceleong26
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1. Homework Statement
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Homework Equations


dsinθ=nλ

The Attempt at a Solution


I chose D, but I can't seem to see why the number of orders changes. There are more lines per metre, so distance between slits decreases, hence sinθ would increase, which means θ increases too. But this would only apply if the number of diffraction orders and the wavelength is the same, according to the formula. Why does the number of diffraction order changes? The answer is B
 
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How many can fit between + pi/2 and - pi/2?
 
Dr. Courtney said:
How many can fit between + pi/2 and - pi/2?
2d/λ ?
 
Dr. Courtney said:
How many can fit between + pi/2 and - pi/2?
Ohhh, so as distance between slits, d, reduces, n reduces, ok I got it. Thanks!
 

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