A converging lens of focal length 12cm and a diverging mirror of focal length 7.5cm are placed 5cm appart with their principal
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A converging lens of focal length 12 cm and a diverging mirror of focal length 7.5 cm are placed 5.0 cm apart with their principal axes ... 1/x+1/[ 5-50(x+4)/ 3x-20] = -1/ 20.
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