Vision Problems: What power contact lens must be used to correct the vision of a nearsighted person whose far point is 40 cm?

A. +2.5 diopters
B. -2.5 diopters
C. -3.6 diopters
D. -4.0 diopters
E. +4.0 diopters


Answer: B

Physics & Space Science

You might also like to view...

Two nuclei which share the same atomic number Z always are

a. stable. b. unstable. c. isotopes. d. isobars. e. radioactive.

Physics & Space Science

The Lewis symbol

would be characteristic of which group?

a.
6A

b.
1A

c.
3A

d.
7A

Physics & Space Science

From where did the molecular oxygen in Earth's atmosphere originate?

A) photosynthesis from plant life B) photosynthesis from single-celled organisms C) outgassing from volcanoes D) atmospheric bombardment E) oxidation of surface rocks

Physics & Space Science

Using the Rayleigh criterion, one concludes that using fixed wavelength light that it is not possible to resolve details less than about

A) 0.5 wavelength. B) 0.1 wavelength. C) one wavelength. D) 10 wavelengths. E) 122 wavelengths.

Physics & Space Science