= Question 1: For a small surface of area A1 = 10-3m2 is known to emit diffusely, and from measurements the total intens

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Question 1 For A Small Surface Of Area A1 10 3m2 Is Known To Emit Diffusely And From Measurements The Total Intens 1 (89.27 KiB) Viewed 23 times

= Question 1: For a small surface of area A1 = 10-3m2 is known to emit diffusely, and from measurements the total intensity associated with emission in the normal direction is In = 7000- .sr. Radiation emitted from the surface is intercepted by three other surfaces of area A4 = A2 = Az = A4 = 10-3m², which 0.5 m from A, and oriented as shown in the figure below. w m2 = A3 A2 R. T 10.5 m, À 60° +45° 0.5 m Ад 0.5 m m For this configuration calculate (i) The intensity associated with emission in each of the three directions (ii) The solid angles subtended by the three surfaces when viewed from A1 (iii) The rate at which radiation emitted by Az is intercepted by the three surfaces? (iv) The irradiation at surfaces A2, A3 and A4 due to A4 (12 marks]