For observing a cricket match,a binocular is preferred to a terrestrial telescope because

If the tube-length $(L)$ of a compound microscope increases, then its magnification . . . . . . .

$A$ compound microscope has a magnifying power of $30$. The focal length of its eyepiece is $5 \ cm$. Assuming the final image is at the least distance of distinct vision $(25 \ cm)$,the magnification produced by the objective is:

$A$ compound microscope is used to enlarge an object kept at a distance $0.03\,m$ from its objective,which consists of several convex lenses in contact and has a focal length of $0.02\,m$. If a lens of focal length $0.1\,m$ is removed from the objective,then by what distance must the eyepiece of the microscope be moved to refocus the image? (in $cm$)

What is a compound microscope? Explain its construction with the help of a figure.

The angular magnification of a simple microscope can be increased by increasing