A lady uses + 1.5 D glasses to have normal vision from 25 cm onwards. She uses a 20 D lens as a simple microscope to see an object. Find the maximum magnifying power if she uses the microscope (a) together with her glass (b) without the glass. Do the answers suggest that an object can be more clearly seen through a microscope without using the correcting glasses?

A person uses + 1.5 D glasses to have normal vision from 25 cm onwards. He uses a 20 D lens as a simple microscope to see an object. Calculate the maximum magnifying power, if he uses the microscope (a) together with his glasses (b) without the glasses.

A thin convex lens of focal length 5 cm is used as a simple microscope by a person with normal near point (25"cm") . What is the magnifying power of the microscope.?

The magnifying power of a simple microscope is given by 1+D/f , where D is the least distance for clear vision. For farsighted persons, D is greater than the usual. Does it mean that the magnifying power of a simple microscope is greater for a farsighted person as compared to a normal person? Does it mean that a farsighted person can see an insect more clearly under a microscope than a normal person?

Find the maximum magnifying power of a compound microscope having a 25 diopter lens as the objective, a 5 diopter lens as the eyepiece and the separation 30 cm between the two lenses. The least distance for clear vision is 25 cm.

A convex lens of a focal length 5 cm is used as a simple microscope. Where should an object be placed so that the image formed by it lies at the least distance of distinct vision (D = 25 cm) ?

The power of a lens used by short sighted person, is -2D. Find the maximum distance of an object which he can see without spectacles.

A converging lens of 2.5cm focal length is used as a simple microscope producing virtual image at 25cm from the eye. The position of the object from the lens is (nearly)

A microscope is used to resolve two self luminous objects separated by a distance of 5 xx 10^(-5)cm and placed in air. What should be the minimum magnifying power of the microscope in order to see the resolved images of the objects? The resolving power of the eye is 1.5 and teh least distance of distinct vision is 25 cm.

A person with normal vision using a compound microscope with f_o=8mm and f_e=2.5 cm , is able to bring an object 9 mm from objective in sharp focus.

A : Resolving power of a microscope can be increased by choosing a medium of higher refractive index between object and objective lens. R : To increase resolving power of microscope, usually on oil having R.I colse to that of objective glass is used.