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A Galilean telescope has objective of focal length 50 cm and an eyepiece of focal length 5 cm. If the final image is formed at least distance for distinct vision (25 cm), find the magnification produced

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Detailed Solution

In Galilean telescope a concave lens is used as eyepiece. Therefore, magnification produced is given by

$m = \frac{f_{0}}{f_{e}} (1 - \frac{f_{e}}{D}) = \frac{50}{5} (1 - \frac{5}{25}) = 8$

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