Question

Two converging lenses are separated by 27.00 cm. The focal length of each lens is 8.300 cm. An object is placed 33.00 cm to the left of the lens that is on the left. Determine the final image distance relative to the lens on the right. Object Lens 1 Lens 2 F Number 7.35. . unitsema the tolerance is +/-20%

Answer 1

here,

for the first lens

the focal length , f1 = 8.3 cm

the object distance , do1 = 33 cm

let the image distance be di1

using the lens formula

1/f1 = 1/di1 + 1/do1

1/8.3 = 1/di1 + 1/33

solving for di1

di1 = 11.1 cm

for the second lens

the focal length , f2 = 8.3 cm

the object distance , do2 = 27 - di1 = 15.9 cm

let the image distance be di2

using the lens formula

1/f2 = 1/di2 + 1/do2

1/8.3 = 1/di2 + 1/15.9

solving for di2

di2 = 17.4 cm

the final image distance is 17.4 cm