Physics · Illumination

From a uniform light source of 300 C.P., there exists a plane surface 15 m below. What is the value of illumination on the plane surface directly below the source when the luminous flux rays are inclined at an angle of 30° to the surface?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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1.15 lux

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From a uniform light source of 300 C.P., there exists a plane surface 15 m below. What is the value of illumination on the plane surface directly below the source when the luminous flux rays are inclined at an angle of 30&deg; to the surface?