QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) |AGRADE
150 mm - ANSWER-When ordering a six inch temple, its corresponding
millimeter value is which of the following?
A. 135 mm
B. 140 mm
C. 145 mm
D. 150 mm
C - ANSWER-What is the focal length of a 2 diopter lens?
A. 500 cm
B. 39.37 inches
C. 500 mm
,D. 2 meters
D - ANSWER-Wavelengths are measured in
A. Meters
B. Decimeters
C. Centimeters
D. Nanometers
A - ANSWER-Which of the following has the shortest and therefore
most harmful wavelength?
A. UVC
B. UVB
C. UVA
D. INFRARED
C - ANSWER-When two light waves are in "in phase" they will
A. Destroy on another
B. Reduce each front by half
C. Compound one another
D. None of the above
,C - ANSWER-The cylinder axis tolerance for a 1.00D cylinder according
to ANSI Z80.1 is
A. Plus or minus 7 degrees
B. Plus or minus 5 degrees
C. Plus or minus 3 degrees
D. Plus or minus 2 degrees
B - ANSWER-A plus lens decentered "out" will result in a finished lens
which is
A. Balanced
B. Thicker temporally
C. Thicker nasally
D. Uniform in edge thickness
C - ANSWER-A minus lens decentered "out" will result in a finished lens
which is
A. Balanced
B. Thicker temporally
C. Thicker nasally
D. Uniform in edge thickness
, C - ANSWER-An uncoated normal plastic lens will reflect approximately
______% of light.
A. 2%
B. 4%
C. 8%
D. 12%
D - ANSWER-A lens having a minus curve on both front and back is
called
A. Toric
B. Meniscus
C. Biconvex
D. Biconcave
C - ANSWER-Give the RX +1.00 +1.00 x 45, how much of the +1.00
cylinder is in the effect at axis 90?
A. 100%
B. 70%
C. 50%
D. 0