Lens Problems problem 24. A person looks at a gem using a concverging lense with a focal lenght of 13.7 cm. The lense forms a virtual image 35.5 cm from the lense. a) Find the magnifaction. This is what I have done so far: f=13.7 , q= -35.5 1/p+1/q=1/f 1/f-1/q=1/p 1/13.7-(-1/35.5)=9.88516=p M=-q/p =--35.5/9.88516 = 4.02333 Is this right?? Problem 30. A magnifying glass has a converging lens of focal length 17.4 cm. At what distance from a nickel should you hold this lens to get an image with a magnificaiton of +2.06? Abswer in cm. got p=8.7 and M=1.841932169 is this right?