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
A. 1.53 lux.
B. 1.15 lux.
C. 58.45 Kilolux.
D. 17.32 lux.
Show Answer
Answer: B
Share your understanding of this question with the correct explanation.