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Wave Optics

Question

A man with normal near point (25 cm) reads a book with small print using a magnifying glass a thin convex lens of focal length 5 cm.
What is the maximum and the minimum angular magnification (magnifying power) possible using the above simple microscope?

Solution

Normal near point of human eye = 25 cm
Focal length , f = 5 cm

Maximum angular magnification is

$\frac{D}{U_{\min}} = \frac{25}{25 / 6} = 6$

Minimum angular magnification is

$\frac{D}{U_{\max}} = \frac{25}{5} = 5 .$

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Wave Optics

A man with normal near point (25 cm) reads a book with small print using a magnifying glass a thin convex lens of focal length 5 cm.
What is the maximum and the minimum angular magnification (magnifying power) possible using the above simple microscope?

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For Daily Free Study Material Join wiredfaculty

Wave Optics

A man with normal near point (25 cm) reads a book with small print using a magnifying glass a thin convex lens of focal length 5 cm.What is the maximum and the minimum angular magnification (magnifying power) possible using the above simple microscope?

Some More Questions From Wave Optics Chapter

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

A man with normal near point (25 cm) reads a book with small print using a magnifying glass a thin convex lens of focal length 5 cm.
What is the maximum and the minimum angular magnification (magnifying power) possible using the above simple microscope?