Questions from College Physics

Q: The near point of a person’s eye is 60.0 cm

The near point of a person’s eye is 60.0 cm. To see objects clearly at a distance of 25.0 cm, what should be the (a) Focal length and (b) Power of the appropriate corrective lens? (Neglect the distanc...

Q: A patient can’t see objects closer than 40.0 cm and

A patient can’t see objects closer than 40.0 cm and wishes to clearly see objects that are 20.0 cm from his eye. (a) Is the patient nearsighted or farsighted? (b) If the eye–lens distance is 2.00 cm,...

Q: The accommodation limits for Nearsighted Nick’s eyes are 18.0 cm

The accommodation limits for Nearsighted Nick’s eyes are 18.0 cm and 80.0 cm. When he wears his glasses, he is able to see faraway objects clearly. At what minimum distance is he able to see objects c...

Q: A certain child’s near point is 10.0 cm; her

A certain child’s near point is 10.0 cm; her far point (with eyes relaxed) is 125 cm. Each eye lens is 2.00 cm from the retina. (a) Between what limits, measured in diopters, does the power of this le...

Q: Choose the option from each pair that makes the following statement correct

Choose the option from each pair that makes the following statement correct. Because ( for an object in relative motion is always [(a) greater; (b) less] than 1, a proper time interval Δtp is always [...

Q: An individual is nearsighted; his near point is 13.0

An individual is nearsighted; his near point is 13.0 cm and his far point is 50.0 cm. (a) What lens power is needed to correct his nearsightedness? (b) When the lenses are in use, what is this person’...

Q: A particular nearsighted patient can’t see objects clearly beyond 15.0

A particular nearsighted patient can’t see objects clearly beyond 15.0 cm from their eye. Determine (a) The lens power required to correct the patient’s vision and (b) The type of lens required (conve...

Q: A particular patient’s eyes are unable to focus on objects closer than

A particular patient’s eyes are unable to focus on objects closer than 35.0 cm and corrective lenses are to be prescribed so that the patient can focus on objects 20.0 cm from their eyes. (a) Is the p...

Q: A patient has a near point of 45.0 cm and

A patient has a near point of 45.0 cm and far point of 85.0 cm. (a) Can a single lens correct the patient’s vision? Explain the patient’s options. (b) Calculate the power lens needed to correct the ne...

Q: A certain camera has f - numbers that range from 1.

A certain camera has f - numbers that range from 1.2 to 22. If the focal length of the lens is 55 mm, what is the range of aperture diameters for the camera?