# Advanced Geometry by H.C. Rajpoot-2014

Geometry Level 3

A uniform point-source of light is located at a point $$\left(0,0,-a\right)$$ in the space. Find the fraction of total radiation, intercepted by a plane bounded by the straight lines

\begin{align} x&=0\\ x&=a\\ y&=0\\ y&=a \end{align}

$$\forall a>0$$.

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