The magnification produced by the objective lens of a compound microscope is 25. The focal length of eye piece is 5 cm and it forms find image at least distance of distinct vision. The magnifying power of the compound microscope is

Magnification of a compound microscope is 30. Focal length of eye - piece is 5 cm and the image is formed at a distance of distinct vision of 25 cm . The magnificatio of the objective lens is

A convex lens of focal length 10 cm and imag formed by it, is at least distance of distinct vision then the magnifying power is

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

When the object is placed 4 cm from the objective of a microscope, the final image formed coincides with the object. The final image is at the least distance of distinct vision (24 cm). If the magnifying power of the microscope is 15, calculate the focal lengths of the objective and eye-piece.

The focal length of objective and eyelens of a astonomical telescope are respectively 20 cm and 5 cm. Final image is formed at least distance of distinct vision. The magnifying power will be

The magnification produced by the objective lens and the eye lens of a compound microscope are 25 and 6 respectively. The magnifying power of this microscope is

Least distance of distinct vision is 25 cm . Magnifying power of simple microscope of focal length 5 cm is

A compound microscope produces a magnification of 24. The focal length of the eyepiece is 5 cm. The final image is formed at the least distance of distinct vision. What is the magnification produced by the objective ?

The focal length of the objective of an astronomical telescope is 75 cm and that of the eye-piece is 5 cm. If the final image is formed at the least distance of distinct vision from the eye, calculate the magnify- ing power of the telescope.