An 8.1✕ binocular has 2.3 cm focal-length eyepieces. What is the focal length of the objective...

Question

Question

An 8.1✕ binocular has 2.3 cm focal-length eyepieces. What is the focal length of the objective lenses?

science physics

Answer 1

Answer #1

the 8.1 is the magnification(m)=focal length of objective lens/focal length of eyepiece lens
2.3 x 8.1= 18.63

Answer 2

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