Electric room heaters use a concave mirror to reflect infrared (IR) radiation from hot coils. Note that IR radiation follows the same law of reflection as visible light. The mirror has a radius of curvature of 40 cm and produces an image of the coils 340 cm away from the mirror. How far away are the coils from the mirror? cm away. What is the absolute value of the magnification of the heater element? Magnification = . Note that its large magnitude helps spread out the reflected energy. Can you see why that is useful for this device?
Electric room heaters use a concave mirror to reflect infrared (IR) radiation from hot coils. Note that IR radiation follows the same law of reflection as visible light. The mirror has a radius of curvature of 40 cm and produces an image of the coils 340 cm away from the mirror. How far away are the coils from the mirror? cm away. What is the absolute value of the magnification of the heater element? Magnification = . Note that its large magnitude helps spread out the reflected energy. Can you see why that is useful for this device?
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Transcribed Image Text:Electric room heaters use a concave mirror to
reflect infrared (IR) radiation from hot coils.
Note that IR radiation follows the same law of
reflection as visible light. The mirror has a
radius of curvature of 40 cm and produces an
image of the coils 340 cm away from the
mirror.
How far away are the coils from the mirror? cm
away.
What is the absolute value of the magnification
of the heater element? Magnification = .
Note that its large magnitude helps spread out
the reflected energy. Can you see why that is
useful for this device?
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