Parallel beam of light is incident on a system of two convex lenses of focal lengths \(f_1=20 \m....

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Parallel beam of light is incident on a system of two convex lenses of focal lengths \(f_1=20 \mathrm{~cm}\) and \(f_2=10 \mathrm{~cm}\). What should be the distance between the two lenses so that rays after refraction from both the lenses pass undeviated
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