To obtain maximum magnification with a simple microscope, where should the eye be placed ?

To obtain a magnified image at distance of distinct vision with a simple microscope, where should the object be placed ?

The magnifying power of a simple microscope M is given by

To obtain maximum resistance by joining the given resistors, they should be grouped in :

The normal magnifying power of a simple microscope is 6. The focal length of the convex lens used is

Why hydrogen should be placed in group I ?

The focal length of the objective of a telescope is 60 cm. To obtain a magnification of 20, the focal length of the eye-piece should be :

To draw maximum current from a combination of cells, how should the cells be grouped ?

Maximum hydration takes place of :