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Calculate the solid angle subtended by t...

Calculate the solid angle subtended by the periphery of an area of `1 cm^(2)` at a point situated symmetrically at a distance of 5 cm from the area.

Text Solution

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Solid angle `Omega=("Area")/(("Distane"^(2))`
`=(1 cm^(2))/((5 cm)^(2))=(1)/(25)=4xx10^(-2)Sr`
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