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CBSE Class 12-science Answered

why coherent sources are required for interference of light ?
 
Asked by kbhardwaj.growel | 21 Jul, 2017, 08:22: PM
answered-by-expert Expert Answer
-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 | 22 Jul, 2017, 03:39: PM
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Asked by balwansungh111334 | 13 Jul, 2022, 07:34: AM
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Deduce the theory of Fresnel Biprism for the determination of wavelength of monochromatic light .    
Asked by pramanikachyut33 | 30 Jun, 2021, 09:11: AM
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What are coherent sources? Can two identical and independent sodium lamps act as coherent sources? Give reason for you answer.
Asked by Topperlearning User | 12 Jun, 2014, 07:02: AM
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Write two essential conditions for obtaining two coherent sources of light.
Asked by Topperlearning User | 12 Jun, 2014, 07:17: AM
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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?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
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
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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How can coherent sources be obtained?
Asked by Topperlearning User | 12 Jun, 2014, 07:20: AM
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CBSE 12-science - Physics
Explain the methods of producing coherent sources?
Asked by Topperlearning User | 12 Jun, 2014, 07:28: AM
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CBSE 12-science - Physics
Rays from the coherent sources reach certain point with a path difference of (3λ/2). will the point be dark or bright?
Asked by Topperlearning User | 08 Jul, 2014, 05:03: PM
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CBSE 12-science - Physics
How do you obtain coherent sources in Fresnel's biprism?
Asked by Topperlearning User | 12 Jun, 2014, 07:47: AM
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