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Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]
- a)no interference
- b)interference with brighter bands
- c)interference with dark bands
- d)interference fringe with larger width
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Interference was observed in interferencechamber where air was present...
In vaccum, λ increases very slightly compared to that in air. As β∝ λ , therefore, width of interference fringe increases slightly.
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Interference was observed in interferencechamber where air was present...
Interference in an interference chamber occurs due to the superposition of two waves, which leads to the formation of alternate bright and dark fringes. When the chamber is evacuated, the air molecules are removed, and the density of the medium is reduced to zero. This has the following effects on the interference pattern:
Reduction in Refractive Index:
• The refractive index of air is 1.0003, which is higher than that of a vacuum (1.0000).
• When the air is removed, the refractive index of the medium is reduced, which affects the path difference between the interfering waves.
• This leads to a change in the interference pattern, which can be observed by a careful observer.
Increase in Wavelength:
• The wavelength of light in vacuum is higher than that in a medium with a refractive index greater than 1.
• When the chamber is evacuated, the wavelength of the light increases, which affects the distance between the bright and dark fringes.
• The width of the interference fringes increases, which can be observed by a careful observer.
Conclusion:
• When the same light is used after evacuating the chamber, a careful observer will see interference fringes with a larger width.
• This occurs due to the reduction in refractive index and the increase in wavelength of light in a vacuum.
• The interference pattern is a result of the wave nature of light and the superposition of two waves.
Reduction in Refractive Index:
• The refractive index of air is 1.0003, which is higher than that of a vacuum (1.0000).
• When the air is removed, the refractive index of the medium is reduced, which affects the path difference between the interfering waves.
• This leads to a change in the interference pattern, which can be observed by a careful observer.
Increase in Wavelength:
• The wavelength of light in vacuum is higher than that in a medium with a refractive index greater than 1.
• When the chamber is evacuated, the wavelength of the light increases, which affects the distance between the bright and dark fringes.
• The width of the interference fringes increases, which can be observed by a careful observer.
Conclusion:
• When the same light is used after evacuating the chamber, a careful observer will see interference fringes with a larger width.
• This occurs due to the reduction in refractive index and the increase in wavelength of light in a vacuum.
• The interference pattern is a result of the wave nature of light and the superposition of two waves.
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Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer?
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Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer?.
Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Interference was observed in interferencechamber where air was present, now the chamberis evacuated, and if the same light is used, acareful observer will see [1993]a)no interferenceb)interference with brighter bandsc)interference with dark bandsd)interference fringe with larger widthCorrect answer is option 'D'. Can you explain this answer?.
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