Question

The objective lenses of a pair of binocular have a focal length of 26.50cm and an aperture of 65.0mm. the oculars have a fical length of 25.0mm and an aperture of 12.50mm. find (a) the angular magnification (b) the diameter of the exit pupils, (c) the object fieldd angle, (d) the image field angle (e) the eye relief and (f) the field at a diatance of 1000m​

Answer 1

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