﻿ A convex lens is placed between an object and a screen which are a fixed distance apart. For one position of the lens the magnification of the image obtained on the screen is m1. When the lens is moved by a distance d, the magnification of the image obtained on the same screen is m2. The focal length of the lens is (m1 > m2).       : Kaysons Education

# A Convex Lens Is Placed Between An Object And A Screen Which Are A Fixed Distance Apart. For One Position Of The Lens The Magnification Of The Image Obtained On The Screen Is m1. When The Lens Is Moved By A Distance d, The Magnification Of The Image Obtained On The Same Screen Is m2. The Focal Length Of The Lens Is (m1 > m2).

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## Question

### Solution

Correct option is

For the first position of the lens, m1 = v/u. For the conjugate (second) position, since u and v are interchanged, we have

Therefore

#### SIMILAR QUESTIONS

Q1

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Q2

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Q3

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Q7

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Q8

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Q9

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Q10

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