Question

The focal length of the objective lens is used in the focal length of the ocular lens is 5 cm the distance between the objective lens and the ocular lens is 30 cm determine the overall magnification and object distance from the objective lens when the eye is relaxed

Answer 1

f= 5cm

f= r/2

5=r/2

5×2 = r

10 = r

d=2r

d=2×10

d= 20