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Reflectivity is defined as
- a)Fraction of total energy transmitted by the body
- b)Fraction of energy reflected by the body
- c)Fraction of total energy absorbed by the body
- d)Fraction of total energy absorbed and radiated by the body
Correct answer is option 'B'. Can you explain this answer?
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Reflectivity is defined asa)Fraction of total energy transmitted by th...
It is total energy reflected by the body. Its value depends upon the nature of the surface of the body, its temperature and wavelength of incident radiations.
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Reflectivity is defined asa)Fraction of total energy transmitted by th...
Reflectivity Definition:
Reflectivity is defined as the fraction of energy reflected by a body when it is exposed to electromagnetic radiation such as light.
Explanation:
- Definition: Reflectivity is a measure of how much of the incident light or radiation is reflected off a surface. It is expressed as a fraction or percentage of the total energy that is reflected.
- Reflectivity vs. Absorptivity: Reflectivity is the opposite of absorptivity. While reflectivity measures the amount of energy that is reflected, absorptivity measures the amount of energy that is absorbed by a body.
- Reflectivity Calculation: Reflectivity can be calculated by dividing the energy reflected by the total energy incident on the body. It is represented as a ratio between 0 and 1, or as a percentage between 0% and 100%.
- Significance: Reflectivity plays a crucial role in various applications such as optics, materials science, and solar energy. High reflectivity is desirable in applications like mirrors, while low reflectivity is preferred for solar panels to maximize energy absorption.
- Reflectivity and Color: The color of an object is determined by the wavelengths of light that are reflected. For example, an object appears red because it reflects red light and absorbs other colors.
Conclusion:
Reflectivity is an important property that characterizes how much of the incident energy is reflected by a body. It is essential in various fields to understand how materials interact with electromagnetic radiation and light.
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Reflectivity is defined asa)Fraction of total energy transmitted by the bodyb)Fraction of energy reflected by the bodyc)Fraction of total energy absorbed by the bodyd)Fraction of total energy absorbed and radiated by the bodyCorrect answer is option 'B'. Can you explain this answer?
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