Lesson 4
Learning Event 2
PRACTICE EXERCISE
1.
When is a light meter accurate?
a.
In sunlight
b.
Indoors, under tungsten halogen lights
c.
Seldom
d.
Under many types of lighting conditions
2.
What does a light meter do?
a.
Measure intensity of light falling on an object
b.
Measures intensity of light reflected by an object or subject
c.
Both a and b
d.
Measures reflected readings of inaccessible objects
3.
The current inside the light meter is in proportion to what?
a.
Temperature and humidity
b.
DC output
c.
AC output
d.
Light
4.
What is a reflected light reading?
a.
Measurement
of
sun striking a subject or object
b.
Measurement
of
the intensity of light reflected from a scene
c.
Measurement
of
key light minus back light in a 2 to 1 ratio
d.
Measurement
of
illumination without shadow density
5.
What is a galvonometer?
a.
Instrument for measuring best average exposure
b.
Instrument for detecting small electric current
c.
Instrument for transposing current values into footcandles
d.
A light-sensitive surface
6.
What is an incident light measurement?
a.
Measurement
of
intensity of light by which a scene is illuminated
b.
Measurement
of
c.
Measurement
of
average brightness of a scene
d.
Measurement
of
incidental bright spots
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