Interference & Polarisation Questions

In summary, interference is when waves meet and interfere with each other, resulting in changes to the amplitude and polarization of the waves. Constructive interference creates brighter light while destructive interference creates darker light. Polarization refers to the direction of wave oscillation and can be controlled through the use of filters. Interference and polarization have practical applications in technology, everyday life, and various fields of science.
  • #1
Hrithik
2
0
1.in an intrfrnce expmnt. wit monochromatic light of wavlngth 6000 AU only 50 fringes are observable.estimate d coherence of d source.

2.show a circularly polarised lght is eqvlnt to 2 mutually perpendicular plane polarised lt wit a phase diff of pie/2.

3.fringes of equal inclination are formed with a 2mm thck plnpll glass plate of n=1.50.how many fringes are formed entirely ? w=6000 AU
 
Physics news on Phys.org
  • #2
any help on what eqs to use please
 

1. What is interference?

Interference is a phenomenon that occurs when two or more waves meet at the same point in space and interfere with each other. This can result in an increase or decrease in the amplitude (height) of the resulting wave, depending on whether the waves are in phase or out of phase.

2. How does interference affect light?

Interference can affect light in several ways. When light waves overlap, they can either constructively interfere, resulting in a brighter light, or destructively interfere, resulting in a darker light. This can create patterns of light and dark regions, known as interference patterns. Interference can also affect the polarization of light, causing it to become polarized in a certain direction.

3. What is the difference between constructive and destructive interference?

Constructive interference occurs when two waves are in phase and their amplitudes combine to create a larger wave. This results in a brighter or more intense light. Destructive interference occurs when two waves are out of phase and their amplitudes cancel each other out, resulting in a dimmer light or even darkness.

4. How does polarization work?

Polarization refers to the direction in which a wave oscillates. Light waves can be polarized in a specific direction by passing them through a polarizing filter. This filter only allows light waves oscillating in a certain direction to pass through, blocking all others. This can be used to control the amount of light that passes through, as well as to reduce glare and reflections.

5. What is the practical application of interference and polarization?

Interference and polarization have many practical applications, including in technology and everyday life. They are used in the development of optical instruments such as microscopes and telescopes, as well as in telecommunications for transmitting and receiving signals. They are also utilized in photography, 3D glasses, and anti-reflective coatings on glasses. Additionally, interference and polarization are studied in various fields of science, including physics, astronomy, and engineering.

Similar threads

B Explanation for bright fringes in Single Slit Diffraction
    • Classical Physics
Replies
4
Views
341
Polarisation destroying interference pattern for double slit
    • Quantum Physics
Replies
3
Views
1K
I What happens when circular polarization meets a diagonal polarizer?
    • Quantum Physics
Replies
20
Views
1K
I 2-photon interference question
    • Quantum Physics
3
Replies
76
Views
4K
A problem about thin-film interference
    • Introductory Physics Homework Help
Replies
3
Views
2K
Thin film interference—find the height of a wedge
    • Introductory Physics Homework Help
Replies
3
Views
1K
Question about Intensity in an Interference Pattern
    • Introductory Physics Homework Help
Replies
6
Views
7K
I Proof of Special Relativity w/ Michelson–Morley Experiment
    • Special and General Relativity
Replies
20
Views
2K
Interferometer and Interference.
    • Introductory Physics Homework Help
Replies
7
Views
2K
Thin Film Interference Problem: A hair is placed at the edge .
    • Introductory Physics Homework Help
Replies
8
Views
3K

Hot Threads

Recent Insights

Back
Top