A lens that is thinner at the center than the edges
a. is a converging lens.
b. is a diverging lens.
c. always forms a real image.
d. always forms a virtual image.
e. none of the above
b, d
You might also like to view...
The ______________number in the periodic table is equal to an element’s number of valence electrons.
Fill in the blank(s) with the appropriate word(s).
Galaxy seeds around which galaxies, clusters, and walls grey may have been
a. caused by hot dark matter. b. caused by baryons. c. the result of the separation of the electromagnetic and weak forces. d. the result of freezing water molecules shortly after the universe became transparent to photons. e. caused by defects in space-time.
Looking forward, common consensus will likely agree that the wisest use of fossil fuels is to
A) convert them to heat and smoke. B) save them for tomorrow's materials. C) extract and sell them as quickly as possible. D) all of the above
What is the hardness of diamond on the Mohs scale?
a. 1 b. 4 c. 7 d. 10