The answer for above problem is explained below.

An object 0.90 cm high is viewed under a magnifier of focal length 16 cm by a person with a near point of 28 cm and a far point of ∞. (a) Find the angle subtended by the image formed by the magnifier when the eye is relaxed. (b) Find the angle subtended by the image formed by the magnifier when the eye is focused at its near point.
A person can focus clearly only on objects between 33.5 cm and 51.5 cm from his eyes. Find the focal lengths of the correcting contact lenses needed to correct his closeup vision and distant vision. Find the powers of the correcting contact lenses needed to correct his closeup vision and distant vision. Answer in the order indicated. Separate your answers with a comma. You want to view an insect 2.20 mm in length through a magnifier. If the insect is...
(a) What is the maximum angular magnification of an eyeglass lens having a focal length of 19.6 cm when used as a simple magnifier? (b) What is the magnification of this lens when the eye is relaxed?
The focal length of a lens is 4.5 cm. Calculate the maximum angular magnification of a simple magnifier when the image is formed at the normal near point of the eye.
The focal length of a lens is 4.6 cm. Calculate the maximum angular magnification of a simple magnifier when the image is formed at the normal near point of the eye.
A person with a near-point distance of 28 cm finds that a magnifying glass gives an angular magnification that is 2.1 times larger when the image of the magnifier is at the near point than when the image is at infinity. Part A What is the focal length of the magnifying glass? Express your answer using two significant figures.
This is a two part question. Part 1. To look closely at a small object, such as an insect or a crystal, you bring it close to your eye, making the subtended angle and the retinal image as large as possible. But your eye cannot focus sharply on objects that are closer than the near point, so the angular size of an object is greatest when it is placed at the near point (25 cm away from a “normal” eye)....
PART A. A near-sighted person has a far-point of 5.16 m. To correct their vision, what should be the focal length of the prescribed lens? Assume the lens will be 2 cm from the eye. PART B. A far-sighted person has a near-point of 83 cm. To correct their vision so that they can see objects that are as close as 10 cm to their eye, what should be the focal length of the prescribed lens? Assume the lens will...
A stamp collector uses a lens with 7.2-cm focal length as a simple magnifier. The virtual image is produced at the normal near point (25 cm). (a) How far from the lens should the stamp be placed? ____cm (b) What is the expected angular magnification?
The distance between the lenses in a compound microscope is 18 cm. The focal length of the objective is 1.5 cm. If the microscope is to provide an angular magnification of -88 when used by a person with a normal near point (25 cm from the eye), what must be the focal length of the eyepiece?