SOLUTION: 1/f = 1/o+ 1/i The image is in focus at distance i from the lens. For an object that is 600mm from a 50-mm lens, use f=50mm and 0=600mm to find i Use the formula above to fin

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 1/f = 1/o+ 1/i The image is in focus at distance i from the lens. For an object that is 600mm from a 50-mm lens, use f=50mm and 0=600mm to find i Use the formula above to fin      Log On


   

Question 370206: 1/f = 1/o+ 1/i
The image is in focus at distance i from the lens. For an object that is 600mm from a 50-mm lens, use f=50mm and 0=600mm to find i
Use the formula above to find the image distance i from an object that is 2,000,000mm from a 250-mm telephoto lens... Please I need help with this one. Thanks..
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

1%2Ff=1%2Fo%2B1%2Fi
1%2F50=1%2F600%2B1%2Fi
1%2Fi=1%2F50-1%2F600
Use a common denominator.
1%2Fi=12%2F600-1%2F600
1%2Fi=11%2F600
highlight%28i=600%2F11%29
.
.
.
1%2F250=1%2F2000000-1%2Fi
1%2Fi=1%2F250-1%2F2000000
1%2Fi=8000%2F2000000-1%2F2000000
1%2Fi=7999%2F2000000
highlight%28i=2000000%2F7999%29