College Physics Reasoning and Relationships

A person can see well close up, but cannot do so in the distance. To correct this, lenses that are _____ having a _____ refractive power could be used.

A magnifying lens of refractive power d (in diopters) gives what magnification when the viewing eye is relaxed assuming a near point of 25 cm?

A converging lens will be prescribed by the eye doctor to correct which of the following?

A lens with a focal length of 12 cm has what refractive power?

You are designing contact lenses for someone whose near point is 43 cm. What focal length lens should you prescribe so that an object can be clearly seen when placed at 25 cm in front of the eye?

A given individual is unable to see objects clearly when they are beyond 75 cm. What focal length contact lens should be used to correct this problem?

While a camera has film where the image is formed, the eye forms the image on the:

If a person is nearsighted the corrective lens will:

A nearsighted person cannot see objects clearly beyond 50 cm (the far point). If the patient has no astigmatism and contact lenses are prescribed, what is the power of the lens required to correct the patient's vision?

A simple magnifier makes an image appear at the near point distance from the eye of the viewer (25 cm). What is the magnifying power of the magnifier if it is constructed of a lens of focal length of 6.3 cm? Do not use the approximation formula.

A magnifying lens with a focal length of 10 cm has what maximum magnification? (Assume the near point is 25 cm). Do not use the approximation formula.

A magnifier uses a:

A lens is used as a magnifier. Which of the following statements is incorrect?

What is the magnitude of the approximate magnification of a compound microscope with objective and eyepiece focal lengths of 0.90 cm and 3.6 cm, respectively, and a separation between lenses of 20 cm?

You are building a compound microscope with an objective lens of focal length 1.1 cm and an eyepiece lens of focal length 5.0 cm. You mount the lenses 18 cm apart. What is the approximate magnification of your microscope?

Doubling the focal length of the objective lens of a compound microscope will change the magnification by what factor?

A compound microscope has an eyepiece that:

If the objective lens of a compound microscope is replaced with a lens of double the focal length while the eyepiece also has its focal length halved, what will happen to the overall magnification of the microscope?

Which of the following would decrease the magnification of a compound microscope?

A telescope has an objective lens with a focal length of 90 cm and an eyepiece of focal length 3.0 cm. What is the angular magnification of the telescope?