why coherent sources are required for interference of light ?
Asked by kbhardwaj.growel | 21st Jul, 2017, 08:22: PM
-This is because light beams are emitted by millions of atoms radiating independently so the phase difference betwwwn waves between non coherent sources fluctuates randomly at a very high frequency.
-Therefore for an interference of light, it is important for the sources to be coherent.
Answered by Abhijeet Mishra | 22nd Jul, 2017, 03:39: PM
- Deduce the theory of Fresnel Biprism for the determination of wavelength of monochromatic light .
- What are coherent sources? Can two identical and independent sodium lamps act as coherent sources? Give reason for you answer.
- Write two essential conditions for obtaining two coherent sources of light.
- Two coherent light beams are made to interfere and produce interference fringes. If the intensity of one beam is twice that of the other, then what will be the visibility of fringes?
- Plot an intensity on screen vs. phase difference graph for the interference pattern obtained in Young's double slit experiment, when: a. Two sources are coherent with each other. b. Two sources are coherent with each other, but a slit against one of the sources is closed.c. Two sources are incoherent with each other
- How can coherent sources be obtained?
- Explain the methods of producing coherent sources?
- Rays from the coherent sources reach certain point with a path difference of (3λ/2). will the point be dark or bright?
- How do you obtain coherent sources in Fresnel's biprism?
- Prove Snell's law of refraction using Huygen's principle.
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