(D) Every body at all times,at all temperatures,emits electromagnetic radiation. For a human body at a normal temperature of approximately $37^{\circ}

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The radiation emitted is in the infrared region.

(D) Every body at all times,at all temperatures,emits electromagnetic radiation. For a human body at a normal temperature of approximately $37^{\circ}C$ $(310 \ K)$,the peak wavelength of the emitted radiation falls within the infrared region of the electromagnetic spectrum. Therefore,the radiation emitted by the human body is in the infrared region.

Class 11 Physics 2 Thermal Properties of Matter: Heat Transfer Radiation (General, Kirchoff's law, Black body, Prevost's Theory)

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We consider the radiation emitted by the human body,which of the following statements is true?

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A
The radiation is emitted only during the day.
B
The radiation is emitted during the summers and absorbed during the winters.
C
The radiation emitted lies in the ultraviolet region and hence is not visible.
D
The radiation emitted is in the infrared region.

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2 Thermal Properties of Matter: Heat Transfer

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Radiation (General, Kirchoff's law, Black body, Prevost's Theory)

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We consider the radiation emitted by the human body,which of the following statements is true?

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If $E$ is the total energy emitted by a body at temperature $T \ K$ and $E_{max}$ is the maximum energy emitted by it at the same temperature,then:

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$Assertion :$ $A$ hollow metallic closed container maintained at a uniform temperature can act as a source of black body radiation.
$Reason :$ All metals act as black bodies.