4. A Lambertian source of radiance 10 W /m² sr is made in the shape of a ring. What is the irradiance at the point P? 0 = arcsin(0.25) and out = arcsin(0.5). OUR

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4. A Lambertian source of radiance 10 W/m² sr is made in the shape of a ring. What is the
irradiance at the point P? = arcsin(0.25) and out = arcsin(0.5).
0
O cur
Transcribed Image Text:4. A Lambertian source of radiance 10 W/m² sr is made in the shape of a ring. What is the irradiance at the point P? = arcsin(0.25) and out = arcsin(0.5). 0 O cur
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