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The value of reflectivity depends upon
(i) Body temperature
(ii) Wavelength of reflected radiation
(iii) Nature of surface of body
Identify the correct statement
(i) Body temperature
(ii) Wavelength of reflected radiation
(iii) Nature of surface of body
Identify the correct statement
- a)1 and 2
- b)2 and 3
- c)2 only
- d)1 and 3
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
The value of reflectivity depends upon(i) Body temperature(ii) Wavelen...
It should be wavelength of incident radiation. It is the fraction of total energy reflected by the body.
Most Upvoted Answer
The value of reflectivity depends upon(i) Body temperature(ii) Wavelen...
Reflectivity and its Factors
Reflectivity refers to the ability of a surface to reflect radiation. The value of reflectivity can be influenced by several factors, including body temperature, the wavelength of the reflected radiation, and the nature of the surface of the body.
(i) Body Temperature
Body temperature can affect the reflectivity of a surface. When an object or body is at a higher temperature, it tends to emit more radiation. This increase in emitted radiation can result in a decrease in reflectivity. On the other hand, when the body temperature is lower, the amount of emitted radiation decreases, leading to an increase in reflectivity.
(ii) Wavelength of Reflected Radiation
The wavelength of the reflected radiation also plays a role in determining the reflectivity of a surface. Different materials have different reflective properties at different wavelengths. For example, some surfaces may have high reflectivity in the visible light spectrum but lower reflectivity in the infrared or ultraviolet spectrum. Therefore, the wavelength of the radiation being reflected can affect the overall reflectivity of the surface.
(iii) Nature of Surface of Body
The nature or characteristics of the surface of the body can significantly impact its reflectivity. Smooth and polished surfaces tend to have higher reflectivity compared to rough or textured surfaces. This is because smooth surfaces allow for more regular reflection of radiation, while rough surfaces scatter the radiation in different directions, reducing the overall reflectivity.
Correct Statement
Based on the given options, the correct statement is option 'D', which states that the value of reflectivity depends upon body temperature and the nature of the surface of the body. This means that the wavelength of the reflected radiation does not directly affect the reflectivity, as it is not included in the correct statement.
In conclusion, the value of reflectivity is influenced by body temperature and the nature of the surface of the body. Understanding these factors is crucial in various fields such as material science, optics, and thermal engineering, where reflectivity plays a significant role in determining the behavior of surfaces and materials.
Reflectivity refers to the ability of a surface to reflect radiation. The value of reflectivity can be influenced by several factors, including body temperature, the wavelength of the reflected radiation, and the nature of the surface of the body.
(i) Body Temperature
Body temperature can affect the reflectivity of a surface. When an object or body is at a higher temperature, it tends to emit more radiation. This increase in emitted radiation can result in a decrease in reflectivity. On the other hand, when the body temperature is lower, the amount of emitted radiation decreases, leading to an increase in reflectivity.
(ii) Wavelength of Reflected Radiation
The wavelength of the reflected radiation also plays a role in determining the reflectivity of a surface. Different materials have different reflective properties at different wavelengths. For example, some surfaces may have high reflectivity in the visible light spectrum but lower reflectivity in the infrared or ultraviolet spectrum. Therefore, the wavelength of the radiation being reflected can affect the overall reflectivity of the surface.
(iii) Nature of Surface of Body
The nature or characteristics of the surface of the body can significantly impact its reflectivity. Smooth and polished surfaces tend to have higher reflectivity compared to rough or textured surfaces. This is because smooth surfaces allow for more regular reflection of radiation, while rough surfaces scatter the radiation in different directions, reducing the overall reflectivity.
Correct Statement
Based on the given options, the correct statement is option 'D', which states that the value of reflectivity depends upon body temperature and the nature of the surface of the body. This means that the wavelength of the reflected radiation does not directly affect the reflectivity, as it is not included in the correct statement.
In conclusion, the value of reflectivity is influenced by body temperature and the nature of the surface of the body. Understanding these factors is crucial in various fields such as material science, optics, and thermal engineering, where reflectivity plays a significant role in determining the behavior of surfaces and materials.
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The value of reflectivity depends upon(i) Body temperature(ii) Wavelength of reflected radiation(iii) Nature of surface of bodyIdentify the correct statementa)1 and 2b)2 and 3c)2 onlyd)1 and 3Correct answer is option 'D'. Can you explain this answer?
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