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A convex lens is placed between an object and a screen which are fixed a distance D apart. For one position of lens the magnification of the sharp image is m1.when the lens is moved through d, the magnification of the image is m2. Focal length of the lens is A) d/m1 - m2 B) d/m1+m2 C) m1 + m2 / d

A convex lens is placed between an object and a screen which are fixed a distance D apart. For one position of lens the magnification of the sharp image is m1.when the lens is moved through d, the magnification of the image is m2. Focal length of the lens is
A) d/m1 - m2 
B) d/m1+m2
C) m1 + m2 / d
 

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
576-707_ee.PNG

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