Why is there such a large discrepancy? Emissivity of a body at a given temperature is the ratio of the total emissive power of a body to the total emissive power of a perfectly black body at that temperature. A black body or blackbody is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. C) It radiates less quantity of heat as it receives from surroundings D) It radiates more quantity of heat as it receives heat from surroundings View Solution play_arrow question_answer 55) A) (b) Compare the total energy radiated by your body in one day (expressed in kilo calories) to the energy in the food you cat. The tenirc the black body, at which the rate of heat roig 32×105 joule /sec/m2 is: (a) 273∘C (b) 527∘C (c) 873∘C (d) 3π 15 mins ago Discuss this question LIVE 15 mins ago One destination to cover all your homework and assignment needs The amount of heat radiated by a body depends on: The absolute temperature of the body (T) The nature of the body – the material, nature of the surface - polished or not, etc. May 2, 2023 · Solution For Calculate the temperature at which a perfect black body radiates at the rate of 1 Wcm−2, Value of Stefan's constant, σ=5. 67 W cm?? (Stefan's constant is 5. Estimate the filament temperature. For example, the Sun, whose surface temperature is in the range between 5000 K and 6000 K, radiates most strongly in a range of wavelengths about 560 nm in the visible part of the electromagnetic spectrum. Available here are Chapter 3 - Kinetic Theory of gases and Radiation Exercises Questions with Solutions and detail explanation for your practice before the examination A black body at 227 ∘ C radiates heat at the rate of cal c m 2 s 1. The subsequently emitted radiation comes out in a spectrum distributed in a specific way that depends upon the body's temperature.

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