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The energy emitted (of all wavelengths) in a particular direction per unit surface area and through a unit solid angle is called
- a)total emissive power
- b)monochromatic emissive power
- c)radiant flux
- d)intensity of radiation
Correct answer is option 'D'. Can you explain this answer?
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The energy emitted (of all wavelengths) in a particular direction per ...
Intensity of Radiation:
The energy emitted in a particular direction per unit surface area and through a unit solid angle is known as the intensity of radiation. It is denoted by the symbol I and is measured in watts per square meter per steradian (W/m^2/sr). The intensity of radiation is an important parameter in understanding the behavior of electromagnetic radiation.
Total Emissive Power:
Total emissive power is the total amount of energy emitted by a surface per unit time, regardless of the direction or wavelength. It is denoted by the symbol P and is measured in watts (W). Total emissive power is a measure of the total radiant energy emitted by a surface, irrespective of the direction in which it is emitted.
Monochromatic Emissive Power:
Monochromatic emissive power refers to the amount of energy emitted by a surface per unit time, per unit surface area, and per unit wavelength. It is denoted by the symbol M and is measured in watts per square meter per meter (W/m^2/m). Monochromatic emissive power describes the energy emitted by a surface at a specific wavelength.
Radiant Flux:
Radiant flux is the total amount of energy emitted by a source per unit time, regardless of the direction or wavelength. It is denoted by the symbol Φ and is measured in watts (W). Radiant flux is a measure of the total power radiated by a source.
Explanation:
In this question, we are asked to identify the term that represents the energy emitted in a particular direction per unit surface area and through a unit solid angle. This is the definition of intensity of radiation. Intensity of radiation takes into account the specific direction and solid angle through which the energy is emitted, making it the correct answer.
While total emissive power represents the total energy emitted without considering direction or wavelength, it does not take into account the specific direction and solid angle of emission. Monochromatic emissive power represents the energy emitted at a specific wavelength, but it does not consider the direction of emission. Radiant flux represents the total power emitted by a source, but it does not consider the specific direction or solid angle of emission.
Therefore, the correct answer is option 'D' - intensity of radiation.
The energy emitted in a particular direction per unit surface area and through a unit solid angle is known as the intensity of radiation. It is denoted by the symbol I and is measured in watts per square meter per steradian (W/m^2/sr). The intensity of radiation is an important parameter in understanding the behavior of electromagnetic radiation.
Total Emissive Power:
Total emissive power is the total amount of energy emitted by a surface per unit time, regardless of the direction or wavelength. It is denoted by the symbol P and is measured in watts (W). Total emissive power is a measure of the total radiant energy emitted by a surface, irrespective of the direction in which it is emitted.
Monochromatic Emissive Power:
Monochromatic emissive power refers to the amount of energy emitted by a surface per unit time, per unit surface area, and per unit wavelength. It is denoted by the symbol M and is measured in watts per square meter per meter (W/m^2/m). Monochromatic emissive power describes the energy emitted by a surface at a specific wavelength.
Radiant Flux:
Radiant flux is the total amount of energy emitted by a source per unit time, regardless of the direction or wavelength. It is denoted by the symbol Φ and is measured in watts (W). Radiant flux is a measure of the total power radiated by a source.
Explanation:
In this question, we are asked to identify the term that represents the energy emitted in a particular direction per unit surface area and through a unit solid angle. This is the definition of intensity of radiation. Intensity of radiation takes into account the specific direction and solid angle through which the energy is emitted, making it the correct answer.
While total emissive power represents the total energy emitted without considering direction or wavelength, it does not take into account the specific direction and solid angle of emission. Monochromatic emissive power represents the energy emitted at a specific wavelength, but it does not consider the direction of emission. Radiant flux represents the total power emitted by a source, but it does not consider the specific direction or solid angle of emission.
Therefore, the correct answer is option 'D' - intensity of radiation.
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The energy emitted (of all wavelengths) in a particular direction per unit surface area and through a unit solid angle is calleda)total emissive powerb)monochromatic emissive powerc)radiant fluxd)intensity of radiationCorrect answer is option 'D'. Can you explain this answer?
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