In: Physics
1) A woman can read the large print in a newspaper only when it
is at a distance of 69 cm or more from her eyes.
(a) Is she nearsighted (myopic) or farsighted
(hyperopic), and what kind of lens is used in her glasses to
correct her eyesight? (b) What should be the
refractive power (in diopters) of her glasses (worn 2.9 cm from the
eyes), so she can read the newspaper at a distance of 22 cmfrom the
eyes?
a)
b)
2) The refractive indices of materials A and B have a ratio of nA/nB = 1.50. The speed of light in material A is 1.33 × 108 m/s. What is the speed of light in material B?