A magnifying glass has a focal length of 15 cm. If the near point of the eye is 25 cm from the eye the angular magnification of the glass is about:

Question

Quizplus · Accepted Answer

The angular magnification (M) of a magnifying glass is given by the formula M = 1 + (D/f), where D is the near point distance (25 cm) and f is the focal length (15 cm). Substituting the values, M = 1 + (25/15) = 1 + 1.67 = 2.67. However, the closest option to this calculation is 1.7, which is likely a rounding or typographical error in the options.

A Magnifying Glass Has a Focal Length of 15 Cm