About Light

31. What is the name of the technique used to measure the curvature of the cornea?
a) Refraction
b) Reflection
c) Tomography
d) Topography

32. What is the name of the device that measures the amount of light that is transmitted through a sample?
a) Spectrometer
b) Spectrophotometer
c) Photometer
d) Radiometer

33. What is the name of the unit used to measure the amount of light that is absorbed by a material?
a) Lumen
b) Watt
c) Joule
d) Absorbance

34. What is the name of the unit used to measure the brightness of a light source?
a) Lumen
b) Watt
c) Joule
d) Absorbance

35. What is the name of the unit used to measure the power of a light source?
a) Lumen
b) Watt
c) Joule
d) Absorbance