Consider a room heater that uses a concave mirror to reflectinfrared radiation from hot coils. The mirror has a radius ofcurvature of 55.0 cm and produces an image of the coils 3.20 m awayfrom the mirror. Calculate the intensity of IR radiation inW/m2 projected by the concave mirror on a person 3.20 maway. Assume that the heating element radiates 1,550 W and has anarea of 130 cm2, and that half of the radiated power isreflected and focused by the mirror.
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