A Spherical Black Body Of Radius R, Show that the factor by which this radiation shield A spherical black body of radius r radiates powerand its rate of cooling is R. If radius were halved and temperature doubled, the power radiated in watt would be (a) 225 (b) 450 (c) 900 (d) 1800. 1800 B. If the radius was halved and the temperature doubled, the power radiated in watt would be: Click here👆to get an answer to your question ️ ALLEN All India Open Test CAREER INS LLVIE ASTUSESTA 0. If another blackbody of radius 2r has temperature 600 K, then rate of radiation will be Solution:Given, Radius of the black body, R1 = 12 cmPower radiated, P1 = 450 WTemperature, T1 = 500 KNew values, Radius of the black body, R2 = R1/2 = 6 cmTemperature, T2 = 2T1 = 1000 KLet P2 be Black Body Radiation Formula and Calculator - Heat Transfer Heat Transfer Engineering | Thermodynamics Radiation, Black Body Equation and Calculator Black Body Radiation Formula and Calculator - Heat Transfer Heat Transfer Engineering | Thermodynamics Radiation, Black Body Equation and Calculator A spherical black body has a radius R and steady surface temperature T, heat sources in it ensure the heat evolution at a constant rate and distributed uniformly over its volume. It emits power 'P' and its rate of colling is R then - A R P a p2 B RPar CRPa 1/p2 DRPC A spherical black body with a radius of 12cm radiates 450W power at 50K If the radius were halved and the temperature doubled the power radiated in watts would be A Solution For 13. Consider a spherical shell of radius R at temperature T. The walls of the cavity are maintained at temperature T 0. black on both sides. (c) R ∝ r2.