Refer to dilagram 3. Suppose the convex mirror behind the plate of partially reflecting glass is changed to a concave mirror. This mirror is distance 55.5 cm behind the glass and has focal length 14.3 cm. Again, a girl stands at distance a from the glass, creating a virtual image in the glass (acting as a mirror), and a real image created by the concave mirror. Find the value of a, in cm, the distance girl must stand from the plate of glass so her two images (the virtual image in the glass and the real image in the concave mirror) coincide.
Refer to dilagram 3. Suppose the convex mirror behind the plate of partially reflecting glass is changed to a concave mirror. This mirror is distance 55.5 cm behind the glass and has focal length 14.3 cm. Again, a girl stands at distance a from the glass, creating a virtual image in the glass (acting as a mirror), and a real image created by the concave mirror. Find the value of a, in cm, the distance girl must stand from the plate of glass so her two images (the virtual image in the glass and the real image in the concave mirror) coincide.
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Transcribed Image Text:Diagram 3
convex
mirror
Transcribed Image Text:Refer to diagram 3.
Suppose the convex mirror behind the plate of partially reflecting glass is changed to a concave mirror. This mirror is distance 55.5 cm behind the glass and has focal
length 14.3 cm. Again, a girl stands at distance a from the glass, creating a virtual image in the glass (acting as a mirror), and a real image created by the concave
mirror. Find the value of a, in cm, the distance girl must stand from the plate of glass so her two images (the virtual image in the glass and the real image in the
concave mirror) coincide.
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