The magnifying power of simple microscope can be increased if we use a lens of

Options

A. higher focal length
B. smaller focal length
C. larger diameter
D. smaller diameter

Answer

B

Explanation

For a simple microscope, M.P. `=1+(D)/(f)or (D)/(f)`
Thus, `M.P prop (1)/(f)`
`therefore ` To increase the M.P. decrease 'f'.