A convex lens is placed between an object and a screen which are fixed a distance D apart For - Science - Force and Laws of Motion

Question

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

Haritha Hari · Answer

Answer is d/m1-m2 Hope this helps!!!!!😃😃
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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