If the ratio of magnifications produced by a simple microscope in near point adjustment and far point adjustment is 6/5 then the focal length of the lens is (Take D=25cm )

The minimum magnification produced by simple microscope of focal length 5 cm is

Maximum magnification produced by simple microscope of focal length f=5cm is

" Maximum magnification produced by simple microscope of focal length "f=5cm" is "

Far points of myopic eye is 250 cm, then the focal length of the lens to be used will be

Near point : 25 cm :: far point : ____

The magnifying power of terrestrial telescope is 25 when it is in normal adjustment and the length of the telescope is 124 cm. If the focal length of the erecting lens is 5 cm, the focal lengths of the objective and the eye-piece are respectively.

The angular magnification of a simple microscope can be increased by increasing :- 1 focal length of lens 2 size of object 3 aperture of lens 4 power of lens

The magnifying power of a simple microscope is 6. The focal length of its lens in metres will be, if least distance of distinct vision is 25cm

An object viewed from a near point distance of 25 cm, using a microscopic lens with magnification '6', gives an unresolved image. A resolved image is observed at infinite distance with a total magnification double the earlier using an eyepiece along with the given lens and a tube of length 0.6 m, if the focal length of the eyepiece is equal to ______ cm.