A 4 dioptre lens is used as a magnifying glass. Where should the object be placed to obtain maximum angular magnification for normal eye?

Where should an object be placed so that its real and same size image is formed?

When an object is placed at a distance of 60 cm from a convex spherical mirror, the magnification produced is 1//2 .Where should the object be placed to get a magnification of 1//3 ?

The focal lengths of the objective and eye-piece of a compound microscope are 1.25 cm and 5 cm respectively. Find the position of the object relative to the objective in order to obtain an angular magnification of 30 in normal adjustment.

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?

Two lenses of power +10 D and -5 D are placed in contact. Where should an object be held from the lens,so as to obtain a virtual image of magnification 2?

Answer the following questions: The angle subtended at the eye by an object is equal to the angle subtended at the eye by the virtual image produced by a magnifying glass. In what sense then does a magnifying glass provide angular magnification?

A convex lens is used to obtain a magnified image of an object on a screen 10 m from the lens .If the magnification is 19,find the foal length of the lens.

Answer the following question: In viewing through a magnifying glass, one usually positions one’s eyes very close to the lens. Does angular magnification change if the eye is moved back?

A card sheet divided into squares each of size 1 mm^2 is being viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 9 cm) held close to the eye. What is the angular magnification (magnifying power) of the lens?