A magnifying lens has a focal length of 10 cm. A person has a near point of 25 cm
(a) What is the magnification of the lens for that person when their eyes are focused at infinity?
(b) What is the magnification of the lens for that person when their eyes are focused at their near point?
(a) 2.5
(b) 3.5
You might also like to view...
Why is the chemical evolution model preferred by scientists over other theories for the origin of life on Earth?
A) it is the theory that best fits the available data B) because we have been able to create Life in the laboratory C) because it was written down in ancient scriptures D) because the other theories have been shown to be incorrect
If a 22 
resistor has a current of 2.0 A flowing through it, what is the potential difference across it?
A. 0.091 V B. 44 V C. 11 V D. 24 V E. 20 V
What is coherent light?
a. light of a single wavelength b. light that is all in phase c. light that is polarized in one direction d. none of the above
The erroneous idea that an object needs a force on it to keep moving even at constant velocity was held by
A. Newton. B. Aristotle. C. Galileo.