A certain 0.86 cm lens is used in a peephole for hotel room doors for safety reasons. The tenant sees the maid in the peephole but she is reduced in size by a factor 0.01.
A. What type of lens must be used?
B. Where is the image of the maid located?
C. What is the power of this lens...
Homework Statement
A 1.5 cm high diamond ring is placed 20 cm in front of a convex lens whose radius of curvature is 30 cm.
a) What is the position and the size of the image?
b) What magnification does this lens have?
Homework Equations
1/f= 1/di + 1/do
m= -di/do or hi/ho
The Attempt at a...