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Magnification of a compound microscope is 30. Focal length of eye`-` piece is `5 cm` and the image is formed at a distance of distinct vision of `25 cm`. The magnificatio of the objective lens isA. 6B. 5C. `7.5`D. 10 |
Answer» Correct Answer - B Here, `m = 30, f_e = 5 cm, d = 25 cm` As `m_e = 1 + (d)/(f_e) = 1 + (25)/(5) = 6` As `m = m_e xx m_0 :. 30 = 6 xx m_0` `m_0 = (30)/(6) = 5`. |
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