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 First filter has electric field transmission axis alligned vertically. position 8.0 meters away 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?
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 First filter has electric field transmission axis alligned vertically. position 8.0 meters away 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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Transcribed Image Text:WAVE EQUATIONS
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Show work (present solutions).
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
First filter has electric
position 8.0 meters away
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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