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Which of the following is a form of light whose photons share the same frequency and whose wavelengths are in phase with one another?
  • a)
    Coherent sources
  • b)
    Incoherent sources
  • c)
    Electromagnetic waves
  • d)
    Sunlight
Correct answer is option 'A'. Can you explain this answer?
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Which of the following is a form of light whose photons share the same...
Coherent sources
Coherent sources are a form of light whose photons share the same frequency and whose wavelengths are in phase with one another. This means that the peaks and troughs of the waves align perfectly, resulting in a consistent and stable waveform.

Incoherent sources
In contrast, incoherent sources produce light waves that have different frequencies and phases. The waves are not synchronized, and their peaks and troughs do not align. As a result, the resulting waveform is irregular and unstable.

Electromagnetic waves
Electromagnetic waves are a broader concept that encompasses both coherent and incoherent sources. They consist of oscillating electric and magnetic fields that propagate through space. These waves can have a wide range of frequencies and phases.

Sunlight
Sunlight is an example of incoherent light. It is a combination of many different frequencies and phases of light waves. The sunlight we receive on Earth is a result of the Sun's electromagnetic radiation, which includes a continuous spectrum of wavelengths.

Coherence in laser light
Coherence is an important property of laser light. Laser light is highly coherent because it is produced by stimulated emission in a laser cavity. This process ensures that the photons emitted by the gain medium have the same frequency and phase, resulting in a coherent beam of light.

Applications of coherence
Coherent light has various applications in science and technology. It is essential in fields such as holography, interferometry, and telecommunications. Coherent light allows for precise measurements and accurate transmission of information.

In summary, coherent sources are a form of light in which the photons have the same frequency and are in phase with one another. This property leads to a stable and consistent waveform. Incoherent sources, on the other hand, produce light waves with different frequencies and phases, resulting in an irregular and unstable waveform. Coherent light is highly valuable in various applications, including holography and telecommunications.
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Which of the following is a form of light whose photons share the same...
Coherent light is a form of light whose photons share the same frequency and whose wavelengths are in phase with one another. The phase difference between the waves should be constant in case of coherent sources.
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Read the following text and answer the following questions on the basis of the same:In one of his experiments on interference, August Jean Fresnel used a biprism to induce interference between two beams. He split a diverging beam of light into two parts by using the biprism to refract them. This resulted in two split beams which acted as if they were from two coherent sources and which therefore interfered with each other.A Fresnel Biprism is a thin double prism placed base to base and have very small refracting angle ( 0.5°). This is equivalent to a single prism with one of its angle nearly 179° and other two of 0.5° each.In Young’s double Slits experiment, a single source is split in two coherent sources. For the Young’s slits experiment, we must approximate that the slits act as point sources. This however is not the case, since the slits have finite width. In this way, it gives rise to unwanted diffraction effects that causes errors.The Fresnel biprism experiment overcomes this problem.A Fresnel biprism is a variation of Young’s Slits experiment. When monochromatic light through a narrow slit falls on biprism that divides it into two components. One of these component is refracted from upper portion of biprism and the other one refracted through lower portion. Two virtual coherent sources formed from the original source. In this case, two virtual coherent sources are point sources and replace slits in Young’s experiment.Q. What is the difference between the coherent sources produced by Young’s double slit arrangement and Fresnel biprism?

Read the following text and answer the following questions on the basis of the same:In one of his experiments on interference, August Jean Fresnel used a biprism to induce interference between two beams. He split a diverging beam of light into two parts by using the biprism to refract them. This resulted in two split beams which acted as if they were from two coherent sources and which therefore interfered with each other.A Fresnel Biprism is a thin double prism placed base to base and have very small refracting angle ( 0.5°). This is equivalent to a single prism with one of its angle nearly 179° and other two of 0.5° each.In Young’s double Slits experiment, a single source is split in two coherent sources. For the Young’s slits experiment, we must approximate that the slits act as point sources. This however is not the case, since the slits have finite width. In this way, it gives rise to unwanted diffraction effects that causes errors.The Fresnel biprism experiment overcomes this problem.A Fresnel biprism is a variation of Young’s Slits experiment. When monochromatic light through a narrow slit falls on biprism that divides it into two components. One of these component is refracted from upper portion of biprism and the other one refracted through lower portion. Two virtual coherent sources formed from the original source. In this case, two virtual coherent sources are point sources and replace slits in Young’s experiment.Q. Fresnel biprism produces

Which of the following is a form of light whose photons share the same frequency and whose wavelengths are in phase with one another?a)Coherent sourcesb)Incoherent sourcesc)Electromagnetic wavesd)SunlightCorrect answer is option 'A'. Can you explain this answer?
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