A small telescope has an objective lens of focal length `144 cm` and an eye-piece of focal length `6.0 cm`. What is the magnifying power of the telescope ? What is the separation between the objective and the eye-piece ?
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Here, `f_(0) = 144 cm, f_(e) 6.0 cm, m = ?, L = ?` In normal adjustment, `m = (-f_(0))/(f_(e)) = (-144)/(6.0) = - 24` `L = f_(0) + f_(e) = 144 + 6.0 = 150.0 cm`
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