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Wave energy which affects changes in the structures of atoms and molecules is called:
radiant energy
A lens that is thicker in the center than on the edges is called:
convex

Which of these groups of wavelengths is in proper order from shortest to longest?
c
Wave energy which moves at a rate of 186,000 miles per second, and which has wavelengths between .0000385 mm and .0000765 mm. is called:
light

Which of the following surfaces will absorb light energy least easily?
c

Which of the following surfaces will absorb light energy most easily?
d

According to the Law of Reflection, which one of the reflected rays of light are drawn correctly?
d

According to the Law of Reflection, which one of the reflected rays of light are drawn correctly?
e

Which one of the following drawings demonstrates the "Laws of Refraction" for the indicated situation?
d

Which one of the following drawings demonstrates the "Laws of Refraction" for the indicated situation?
b