A convex lens of focal length `5 cm` is used as a simple microscope. What will be the magnifying power when the image is formed at the least distance of distinct vision ?

A convex lens of focal length 5cm is used as a simple microscope. What is the magnifying power, if final image is formed at the distance of distinct vision i.e. 25 cm ? If it is used as an eyepiece in a compound microscope with objective of magnifying power 40, what is the magnifying power of the compound microscope ?

Calculate the focal length of a lens used as simple microscope of magnifying power 20. Consider that the final image is formed at the least distance of distinct vision.

A convergent lens of power 16D is used as a simple microscope. The magnification produced by the lens, when the final image is formed at least distance of distinct vision is

A simple microscope has a magnifying power of 4.125, when the image is formed at the distance of distinct vision. What is the focal power of the lens ?

A telescope has an objective of focal length 100 cm and an eyepiece of focal length 5 cm. What is the magnifying power of the telescope when the final image is formed at the least distance of distinct vision ?

What is the magnifying power of a simple microscope of focal length 5 cm, if the image is formed at the distance of distinct vision ?

Convex lens of focal length f is used as simple microscope. D is the least distance for distinct vision.

A convex lens of focal length 12.5 cm is used as a simple microscope. When the image is formed at infinite, magnification is _______ (Near point for the normal vision is 25 cm).