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In optical pyrometers absorption filter is used
- a)to get monochromatic light
- b)to eliminate stray rays of light
- c)to minimise reflection of rays from the lens surface
- d)to enable filament operation at reduced intensity for longer life
Correct answer is option 'C'. Can you explain this answer?
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In optical pyrometers absorption filter is useda)to get monochromatic...
To increase the temperature range which is to be measured, an absorption screen is fitted between the optical lens and the reference bulb. A red filter placed between the eyepiece and the reference bulb helps in narrowing the band of wavelength.
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In optical pyrometers absorption filter is useda)to get monochromatic...
Introduction:
In optical pyrometers, an absorption filter is used to minimize the reflection of rays from the lens surface. This is an important function of the absorption filter as it helps in accurate temperature measurement and improves the performance of the pyrometer.
Explanation:
Optical pyrometers are devices used to measure high temperatures by determining the color of the light emitted by the object being measured. These pyrometers work on the principle of Wien's displacement law, which states that the peak wavelength of radiation emitted by a black body is inversely proportional to its temperature. By measuring the peak wavelength, the temperature of the object can be determined.
Importance of an absorption filter:
When using an optical pyrometer, it is crucial to minimize the reflection of rays from the lens surface. This is because the reflected rays can interfere with the measurement by introducing additional wavelengths that are not emitted by the object being measured. The absorption filter plays a vital role in reducing these reflections and ensuring accurate temperature measurement.
Minimizing reflection:
The absorption filter is designed to absorb or block specific wavelengths of light that are reflected by the lens surface. It is usually made of a material that has high absorption properties for the unwanted wavelengths. By placing the absorption filter in front of the lens, it reduces the intensity of the reflected rays, allowing only the desired wavelengths to pass through.
Ensuring accurate temperature measurement:
By minimizing the reflection of rays from the lens surface, the absorption filter helps in obtaining a clean and accurate measurement of the peak wavelength emitted by the object. This leads to more precise temperature readings and improved performance of the optical pyrometer.
Conclusion:
In optical pyrometers, the absorption filter is used to minimize the reflection of rays from the lens surface. This is important to ensure accurate temperature measurement by reducing interference from unwanted wavelengths. The absorption filter helps in obtaining clean and precise measurements, improving the overall performance of the pyrometer.
In optical pyrometers, an absorption filter is used to minimize the reflection of rays from the lens surface. This is an important function of the absorption filter as it helps in accurate temperature measurement and improves the performance of the pyrometer.
Explanation:
Optical pyrometers are devices used to measure high temperatures by determining the color of the light emitted by the object being measured. These pyrometers work on the principle of Wien's displacement law, which states that the peak wavelength of radiation emitted by a black body is inversely proportional to its temperature. By measuring the peak wavelength, the temperature of the object can be determined.
Importance of an absorption filter:
When using an optical pyrometer, it is crucial to minimize the reflection of rays from the lens surface. This is because the reflected rays can interfere with the measurement by introducing additional wavelengths that are not emitted by the object being measured. The absorption filter plays a vital role in reducing these reflections and ensuring accurate temperature measurement.
Minimizing reflection:
The absorption filter is designed to absorb or block specific wavelengths of light that are reflected by the lens surface. It is usually made of a material that has high absorption properties for the unwanted wavelengths. By placing the absorption filter in front of the lens, it reduces the intensity of the reflected rays, allowing only the desired wavelengths to pass through.
Ensuring accurate temperature measurement:
By minimizing the reflection of rays from the lens surface, the absorption filter helps in obtaining a clean and accurate measurement of the peak wavelength emitted by the object. This leads to more precise temperature readings and improved performance of the optical pyrometer.
Conclusion:
In optical pyrometers, the absorption filter is used to minimize the reflection of rays from the lens surface. This is important to ensure accurate temperature measurement by reducing interference from unwanted wavelengths. The absorption filter helps in obtaining clean and precise measurements, improving the overall performance of the pyrometer.
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In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer?
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In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer?.
In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In optical pyrometers absorption filter is useda)to get monochromatic lightb)to eliminate stray rays of lightc)to minimise reflection of rays from the lens surfaced)to enable filament operation at reduced intensity for longer lifeCorrect answer is option 'C'. Can you explain this answer?.
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