No.of orders of diffraction visible

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In summary, the conversation discusses the concept of diffraction and how the number of diffraction orders changes with a decrease in the distance between slits. The formula dsinθ=nλ is used to explain this concept, with the number of diffraction orders being proportional to the wavelength and inversely proportional to the distance between slits. The conversation concludes with the understanding that as the distance between slits decreases, the number of diffraction orders also decreases.
  • #1
Janiceleong26
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1. Homework Statement
image.jpg


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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  • #3
Dr. Courtney said:
How many can fit between + pi/2 and - pi/2?
2d/λ ?
 
  • #4
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!
 

1. What is the concept of "No. of orders of diffraction visible"?

The number of orders of diffraction visible refers to the number of distinct diffraction patterns that can be observed when a light wave passes through a narrow slit or diffracting object. These patterns are formed due to the interference and diffraction of the light waves as they pass through the slit or object.

2. How is the number of orders of diffraction visible determined?

The number of orders of diffraction visible depends on the width of the slit or the size of the diffracting object, as well as the wavelength of the light passing through it. As the slit or object becomes smaller, the number of orders of diffraction visible increases.

3. What is the significance of the number of orders of diffraction visible in scientific research?

The number of orders of diffraction visible is important in understanding the behavior of light waves and their interaction with different materials. It is also used in experiments to determine the properties of light, such as wavelength and intensity, and to study the structure of materials.

4. Can the number of orders of diffraction visible be changed?

Yes, the number of orders of diffraction visible can be changed by altering the width of the slit or the size of the diffracting object, or by using light of different wavelengths. The angle of incidence of the light can also affect the number of orders visible.

5. Are there any real-life applications of the concept of number of orders of diffraction visible?

Yes, the concept of number of orders of diffraction visible is used in various technologies, such as spectroscopy, diffraction gratings, and optical instruments like microscopes and telescopes. It is also used in industries like semiconductor manufacturing and in the study of crystal structures in materials science.

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