You want to have an illuminance of 1000 lux on the Player #2(under the SPOTLIGHT#2 – the rectangular beam). What is the Luminous Flux (lumen) the lamp need to releases assuming homogeneous distribution of the light in the illuminated rectangle? Question #1Given the following scene on the stagePlayer #1Diameter 2metersPlayer #3ORANDiameter 1meterPlayer #2High 2mWidth 1mAll spotlights are place at 15 meters from the stage. You want to produce a circle of light of 2metersdiameter with the SPOTLIGHT#1 on the Player #1, a rectangle of light of 2m by 1m with the SPOTLIGHT#2 on the Player #2 and a circle of light of 1meter diameter with the SPOTLIGHT#3 on the Player #3

Answer: Given, illuminance of Spotlight #2 is given as 1000 lux on player #2. The spotlight is in rectangular shape which has the dimension of Length ,L=2m and breadth ,B=1m Now,from the given dimension of spotlight we can find the area of rectangular spotlight. Area ,A=L×B A=2×1=2 m2 Now ,we know that Illuminance is the Luminous Flux per unit area of incident radiation away from the light source. So, we can write it as Illuminance= Luminous FluxArea So,Luminous Flux=ILLUMINANCE ×AREA Luminous Flux=1000×2 ⇒2000 lux.m2

Science

Advanced Physics

You want to have an illuminance of 1000 lux on the Player #2(under the SPOTLIGHT#2 – the rectangular beam). What is the Luminous Flux (lumen) the lamp need to releases assuming homogeneous distribution of the light in the illuminated rectangle?

You want to have an illuminance of 1000 lux on the Player #2(under the SPOTLIGHT#2 – the rectangular beam). What is the Luminous Flux (lumen) the lamp need to releases assuming homogeneous distribution of the light in the illuminated rectangle?