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If the temp of hot body is increased by 50 the amount of radiation emitted is increased by?
The amount of radiation emitted by a hot body is directly proportional to the fourth power of its temperature (Stefan-Boltzmann law). Therefore, if the temperature of a hot body is increased by 50 units, the amount of radiation emitted will increase by a factor of (1+50/old temp)^4.
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What Radiation emitted by a body that absorbed it first?
The radiation emitted by a body that absorbed it first is known as re-emitted or secondary radiation. This occurs when absorbed energy is re-radiated by the object in a different form such as heat or light.
What are the factors does the heat emitted by a hot body depend?
The heat emitted by a hot body depends on its temperature, surface area, and emissivity. The Stefan-Boltzmann law states that the total amount of heat radiation emitted by a body is directly proportional to the fourth power of its absolute temperature.
What is a perfect black body and how does it relate to the concept of thermal radiation?
A perfect black body is an object that absorbs all incoming radiation and emits the maximum amount of thermal radiation for its temperature. It serves as a theoretical standard for understanding thermal radiation. The concept of a perfect black body helps scientists study and compare the thermal radiation emitted by real objects.
What form of electromagnetic radiation is emitted by low temperature objects like the human body?
Infrared radiation is invisible to us and emitted by the human body.
Where is most of the radiation emitted that produces its black body spectrum?
Most of the radiation that produces a black body spectrum is emitted from the surface of the object itself. This radiation is a result of thermal vibrations of the atoms and molecules on the object's surface, which generate a continuous spectrum of electromagnetic radiation across various wavelengths.
What Radiation emitted by a body that absorbed it first?
The radiation emitted by a body that absorbed it first is known as re-emitted or secondary radiation. This occurs when absorbed energy is re-radiated by the object in a different form such as heat or light.
What are the factors does the heat emitted by a hot body depend?
The heat emitted by a hot body depends on its temperature, surface area, and emissivity. The Stefan-Boltzmann law states that the total amount of heat radiation emitted by a body is directly proportional to the fourth power of its absolute temperature.
What is a perfect black body and how does it relate to the concept of thermal radiation?
A perfect black body is an object that absorbs all incoming radiation and emits the maximum amount of thermal radiation for its temperature. It serves as a theoretical standard for understanding thermal radiation. The concept of a perfect black body helps scientists study and compare the thermal radiation emitted by real objects.
What form of electromagnetic radiation is emitted by low temperature objects like the human body?
Infrared radiation is invisible to us and emitted by the human body.
What type of radiation emitted during a nuclear detonation and from fallout results in whole body exposure?
Gamma radiation
Where is most of the radiation emitted that produces its black body spectrum?
Most of the radiation that produces a black body spectrum is emitted from the surface of the object itself. This radiation is a result of thermal vibrations of the atoms and molecules on the object's surface, which generate a continuous spectrum of electromagnetic radiation across various wavelengths.
The wavelength of the radiation emitted by a body depends upon?
The temperature of the body. As the temperature of the body increases, the wavelength of the radiation emitted decreases, shifting towards shorter wavelengths. This relationship is described by Wien's displacement law.
What does the black body radiation graph represent and how does it relate to the concept of thermal radiation?
The black body radiation graph represents the intensity of radiation emitted by an object at different wavelengths. It relates to the concept of thermal radiation because it shows how an object's temperature affects the distribution of emitted radiation. As an object gets hotter, it emits more radiation at shorter wavelengths, which is known as thermal radiation.
What happens to total radiation from a black body if its absolute temperature is doubled?
The total radiation emitted by a black body is proportional to the fourth power of its absolute temperature according to Stefan-Boltzmann law. Therefore, if the absolute temperature of a black body is doubled, the total radiation emitted will increase by a factor of 16.
How does thermal radiation change as a body emitting it changes temperature?
As a body's temperature increases, its thermal radiation also increases. This is because thermal radiation is directly proportional to the fourth power of temperature according to the Stefan-Boltzmann law. This means that a small increase in temperature results in a significant increase in the amount of thermal radiation emitted.
What bodies emit infrared radiation?
All objects with a temperature above absolute zero emit infrared radiation. This includes humans, animals, plants, and inanimate objects like rocks and buildings. The amount of infrared radiation emitted depends on the temperature of the body.
Why does amount of black body radiation emitted depend on temperature of object?
The hotter an object gets the faster its atoms vibrate.Vibration can be considered as a repeating cycle of accelerating, decelerating and then accelerating back again in the other direction.Accelerating charges radiate energyHence, vibrating atoms radiate energyHotter atoms vibrate more quickly so do more accelerating, so they emit more radiation!
