The focal lengths of the objective and eye piece of a microscope are `2 cm and 5 cm` respectively, and the distance between them is `20 cm`. Find the distance of the object from the objective when the final image seen by the eye is `25 cm` from the eye piece. What is the magnifying power ?

If the focal lengths of the objective and eyepiece of a microscope are 2 cm and 5 cm respectively and the distance between them is 20 cm, what is the distance of the object from the objective when the image seen by the eye is 25 cm from eyepiece? Also find the magnifying power.

The focal length of object glass of a microscope is 0.02 m, that of the eye-piece is 0.04 and distance between them is 0.20 m. What is the distance of the object from the object glass when the image seen by the eye is 0.25 m from the eye-piece? Calculate also the magnifying power of the microscope.

The focal lengths of the objective and the eyepiece of a compound microscope are 1.0 cm and 5.0 cm respectively. An object, placed at a distance of 1.1 cm from the objective, has its final image formed at a distance of 25 cm from the eye. Find the magnifying power of the microscope.

The focal lengths of the objective and the eye piece of an astronomical telescope are 100 cm and 5 cm respectively. Calculate its magnifying power.

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be