(a. Solve for k if we know that I = 750 luxes at a distance of 2 meters from the light source. k = 3000)
This is the question I need help with!!
B. IF OUR SOLAR POWERED CALCULATOR NEEDS AT LEAST 300 LUXES TO OPERATE, HOW FAR AWAY FROM THE LIGHT SOURCE CAN WE PLACE THE CALCULATOR AND STILL BE ABLE TO OPERATE IT?
The Intensity of Light and its relationship to Distance from Source is calculated.
Traveling waves are considered.
1) A 100 W lightbulb produces 5.0 W of visible light. (The other 95W are dissipated as heat and infrared radiation.) What is the light intensity on a wall 2.5 m away from the lightbulb?
2)A krypton laser produces a cylindrical red laser beam 2.0mm in diameter with 5.0 W of power. What is the light intensity on a wall 2.5 m away from the laser?View Full Posting Details