The unaided nearsighted human eye focuses light from a distant object
A. on the retina.
B. behind the retina.
C. in front of the retina.
D. acceptably but is too short for the focusing power of the cornea.
Answer: C
You might also like to view...
Eclipses can occur only when, viewed from Earth, the Sun is near one of the _______________. of the Moon's orbit
Fill in the blank(s) with correct word
A conducting rod (length = 2.0 m) spins at a constant rate of 2.0 revolutions per second about an axis that is perpendicular to the rod and through its center. A uniform magnetic field (magnitude = 8.0 mT) is directed perpendicularly to the plane of rotation. What is the magnitude of the potential difference between the center of the rod and either of its ends?
A. 16 mV B. 50 mV C. 8.0 mV D. 0.10 mV E. 100 mV
What is the correct fraction of dust to gas in the interstellar medium?
a. 1/99 b. 10/90 c. 50/50 d. 90/10
Imagine that you are trying to stop neutrinos with a lead shield. How thick would you need to make this shield to ensure that it can stop a neutrino?
A) about 700,000 kilometers (the radius of the Sun) B) about 150 million kilometers (the size of an astronomical unit) C) about 14 billion light years (the size of the observable universe) D) about one light year E) about one meter