Consider a beam expander which consists of two converging lenses of focal lengths 40 cm and 100 cm having a common optical axis. A laser beam of diameter 4 mm is incident
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Consider a beam expander which consists of two converging lenses of focal lengths 40 cm and 100 cm having a common optical axis. A laser beam of diameter 4 mm is incident Consider a beam expander which consists of two converging lenses of focal lengths 40 cm and 100 cm having a common optical axis. [...]