1. A 100 Watt incandescent bulb is about 5.0% efficient at converting electrical energy into radiant energy (i.e. it produces 5.0 W of light energy). Assume the bulb projects light equally in all directions and produces light that is randomly Unpolarized light source 8.0 m polarized (in other words very small distance between filters (not to scale) the source is isotropic and unpolarized). A pair of 30 Observer polarizing filters is used to examine the light at a First filter has electric field transmission axis position 8.0 meters away alligned vertically. Second filter/analyzer has axis at 30° angle relative to the first. from the bulb. (A) What is the intensity of light at the position of the filters just before it enters the first filter? (B) If the first filter faces the lamp and aligned and has a vertically aligned transmission axis, and the second analyzing filter is placed immediately behind the first and is aligned at a 30 degree angle from the vertical, what will be the intensity of light exiting the pair of filters to a nearby observer?
1. A 100 Watt incandescent bulb is about 5.0% efficient at converting electrical energy into radiant energy (i.e. it produces 5.0 W of light energy). Assume the bulb projects light equally in all directions and produces light that is randomly Unpolarized light source 8.0 m polarized (in other words very small distance between filters (not to scale) the source is isotropic and unpolarized). A pair of 30 Observer polarizing filters is used to examine the light at a First filter has electric field transmission axis position 8.0 meters away alligned vertically. Second filter/analyzer has axis at 30° angle relative to the first. from the bulb. (A) What is the intensity of light at the position of the filters just before it enters the first filter? (B) If the first filter faces the lamp and aligned and has a vertically aligned transmission axis, and the second analyzing filter is placed immediately behind the first and is aligned at a 30 degree angle from the vertical, what will be the intensity of light exiting the pair of filters to a nearby observer?
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Transcribed Image Text:1. A 100 Watt incandescent bulb is about 5.0% efficient at converting electrical energy into radiant
energy (i.e. it produces 5.0 W of light energy). Assume the bulb projects light equally in all
directions and produces
light that is randomly
Unpolarized
light source
8.0 m
polarized (in other words
the source is isotropic and
very small distance between filters
(not to scale)
unpolarized). A pair of
30°
polarizing filters is used to
Observer
examine the light at a
position 8.0 meters away
First filter has electric
field transmission axis
alligned vertically.
from the bulb.
Second filter/analyzer has axis
at 30° angle relative to the first.
(A) What is the intensity of light at the position of the filters just before it enters the first filter?
(B) If the first filter faces the lamp and aligned and has a vertically aligned transmission axis, and
the second analyzing filter is placed immediately behind the first and is aligned at a 30
degree angle from the vertical, what will be the intensity of light exiting the pair of filters to
a nearby observer?
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