Question
Find these 2 object distances by using the thin lens formula
A converging thin lens of focal length f = 4 cm is placed between an object and a screen that are separated by 33 cm. There are two values of the object distance o (distance between the object and the lens) that produce sharp (real) images on the screen. Find these two object distances by using the thin - lens formula 1 / 0 + 1 / i = 1 / f and the condition o + i = 33 cm that constrains the object - to - image distance to be fixed at 33 cm. The shorter of the two object distances is: [Num] [Units] The longer of the two object distances is: [Num] [Units]
Explanation / Answer
so then i = 33 - o
so
1/o + 1/(33-o) = 1/4
o=4.66 cm
or
o = 28.34 cm