An individual's eye pupil changes from a diameter of 3.5 mm to 1.4 mm as the illumination is increased. By what factor does the minimum angle of resolution change?
a. 0.5
b. 0.71
c. 2.2
d. 2.5
e. 4.9
d
You might also like to view...
Europa is covered with an ocean of ________
Fill in the blank(s) with correct word
In another solar system, a planet has a moon that is 4.0 × 105 m in diameter. Measurements reveal that this moon takes 3.0 x 105 s to make each orbit of diameter 1.8 × 108 m. What is the mass of the planet? (G = 6.67 × 10-11 N ? m2/kg2)
A) 1.2 × 1024 kg B) 1.7 × 1024 kg C) 2.4 × 1024 kg D) 3.4 × 1024 kg E) 4.8 × 1024 kg
Snowstorms accompanied by high winds and low temperatures are called
a. blizzards. b. ice storms. c. hail storms. d. tornados.
A horizontal straight wire carries a current from east to west. The resulting magnetic field lines are
A. straight lines perpendicular to the wire. B. closed circles perpendicular to the wire directed counterclockwise as viewed from the east. C. parallel to the wire from east to west. D. closed circles perpendicular to the wire directed clockwise as viewed from the east. E. parallel to the wire from west to east.