TRANSVERSE MAGNIFICATION

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Magnification positive : Erect image :: Magnification negative : ………….

Magnification From Convex Mirror

When an small object is placed at a distance x_(1) and x_(2) from a lens on its principal axis, then real image and a virtual image are formed respectively having same magnitude of transverse magnification. Then the focal length of the lens is :

When an small object is placed at a distance x_(1) and x_(2) from a lens on its principal axis, then real image and a virtual image are formed respectively having same magnitude of transverse magnification. Then the focal length of the lens is :

An aligned optical system consists of two thin lenses with focal lengths f_(1) and f_(2) , the distance between the lenses being equal to d . The given system has to be replaced by one thin lens which, at any position of an object, would provide the same transverse magnification as the system. what must the focal length of this lens be equal to and in what position must it be placed with respect to the two-lens system?