How Far is the Third-Order Bright Fringe from the Central Maximum?

  • Thread starter Thread starter noobie!
  • Start date Start date
  • Tags Tags
    Optic Physics
Click For Summary
SUMMARY

The discussion focuses on calculating the distance from the central maximum to the third-order bright fringe in a double-slit interference pattern. Given parameters include a slit separation of 0.25 mm, a screen distance of 1.5 m, and a light wavelength of 680 nm. The correct approach involves using the formula for fringe spacing, which incorporates the order of the fringe (m=3 for the third-order) and the wavelength. The final calculation yields a distance of approximately 0.51 m from the central maximum to the third-order bright fringe.

PREREQUISITES
  • Understanding of double-slit interference patterns
  • Familiarity with the wavelength of light and its impact on interference
  • Knowledge of basic trigonometry and sine functions
  • Ability to apply the formula for fringe spacing in interference
NEXT STEPS
  • Study the derivation of the double-slit interference formula
  • Learn about the impact of slit width on interference patterns
  • Explore the concept of fringe visibility and its calculation
  • Investigate the effects of varying wavelengths on fringe spacing
USEFUL FOR

Students studying optics, physics educators, and anyone interested in understanding the principles of light interference and its applications in experimental setups.

noobie!
Messages
57
Reaction score
0

Homework Statement


Monochromatic light passes through 2 narrow slits 0.25mm apart and forms an interference pattern on screen 1.5m away.If light with a wavelength of 680nm is used,what is the distance between center of central maximum and center of the third-order bright fringes?


Homework Equations



sorry don't have..

The Attempt at a Solution


d=0.25mm ,y=1.5m lambda=680x10^-9, central max=0, third order=3
i tried using sin@=m x lambda /d ,but y is given..i think i should have use it but then i don't know where n when to use..can you please hint me?
 
Physics news on Phys.org
sorry,i've done it already,im so sorry..
 

Similar threads

Second bright fringe in Young's Experiment
  • · Replies 3 ·
Replies
3
Views
1K
Number of bright fringes given by diffraction grating on a screen
  • · Replies 6 ·
Replies
6
Views
3K
Diffraction pattern from a grating
  • · Replies 3 ·
Replies
3
Views
1K
HW Question regarding double-slit interference
  • · Replies 8 ·
Replies
8
Views
3K
Calculating Fringe Positions in Two-Slit Interference Patterns
  • · Replies 2 ·
Replies
2
Views
2K
Why does diffracted white light have a white central fringe?
  • · Replies 6 ·
Replies
6
Views
7K
Double Slit Wave Interference - what is m?
  • · Replies 1 ·
Replies
1
Views
2K
Fringes from Different Interfering Wavelengths
  • · Replies 2 ·
Replies
2
Views
5K
With the info given, what are 3 ways to calculate wavelength?
  • · Replies 1 ·
Replies
1
Views
1K
The # of bright fringes in a double slit with finite width?
  • · Replies 3 ·
Replies
3
Views
2K