Illumination
From a uniform light source having luminous intensity of 300 candelas, there exists a plane surface 15 m below. The value of illuminance at a point on the plane surface where the luminous flux rays are inclined at an angle of 30 to the surface is

 58.45 Kilolux.
 17.32 lux.
 1.15 lux.
 1.53 lux.

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