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Magnification of a compound microscope in normal adjustment

This type of question, asked 2 times: 21 Jan 2026 S1, 24 Jan 2026 S1. All 2 questions below, oldest first.

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  1. Question 1

    21 Jan 2026 S1

    25
    In a microscope the objective is having focal length f0=2 cmf_{0} = 2\text{ }cm and eye-piece is having focal length fe=4 cmf_{e} = 4\text{ }cm. The tube length is 32 cm. The magnification produced by this microscope for normal adjustment is ____\_\_\_\_ .

  2. Question 2

    24 Jan 2026 S1

    8
    In a microscope of tube length 10 cm two convex lenses are arranged with focal length of 2 cm and 5 cm . Total magnification obtained with this system for normal adjustment is (5)k(5)^{k}. The value of k is ____\_\_\_\_

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