a simple e placed 1 The ximum nt cm micro X for a or ver for a 25 cm is observer reads a book with small print using a

Question

a simple e placed 1 The ximum nt cm micro X for a or ver for a 25 cm is observer reads a book with small print using a magnifying glass a with normal near point 25 cm thin convex lens of focal length 5 cm the eye ens and i What is the closest and the farthest distance at which he can read the book when viewing through the magnifying glass ii What is the maximum and the minimum angular magnification magnifying power possible using the above simple microscope NCERT Solution i For the closest distance v 25 cm f 5 cm u As 1 1 or u V U f 1 1 1 U 1 1 1 vf 25 5 25 6 U This is the closest distance at which the man can read the book For the farthest image V f 5 cm 1 V f cm 4 2 cm 1 1 5 6 25 25 u 1 5 0 25 min 25 6 Minimum angular magnification 11 u 5 cm This is the farthest distance at which the man can read the book ii Maximum angular magnification D 6 1 1 5 5 HD 14355

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