A circular area of radius 10 cm is placed at a distance of. 20 m from a point source. The source emits light uniformly in all directions. The line joining the source to the centre of the area is normal to the area. It is found that 20 x 10 lumen of lum inous flux is incident on the area. Calculate the total luminous flux emitted by the Source and the luminous intensity of the source along the axis of the area.
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