Maximum magnification produced by a simple microscope of focal length $f=5 \,cm$ is

The magnification of a compound microscope is $30$. If the focal length of the eyepiece is $5 \, cm$,what is the magnification of the objective lens?

$A$ compound microscope consists of an objective lens of focal length $1 \, cm$ and an eyepiece of focal length $5 \, cm$ with a separation of $10 \, cm$. The distance between an object and the objective lens,at which the strain on the eye is minimum,is $\frac{n}{40} \, cm$. The value of $n$ is $....$

$A$ microscope consists of an objective of focal length $1.9 \,cm$ and an eyepiece of focal length $5 \,cm$. The two lenses are kept at a distance of $10.5 \,cm$. If the image is to be formed at the least distance of distinct vision, the distance at which the object is to be placed before the objective is (least distance of distinct vision is $25 \,cm$). (in $\,cm$)

The objective of a compound microscope is essentially

Which of the following statements are true in the context of a Compound Microscope?