Question

On increasing the length of the tube of a compound microscope its
magnifying power.​

Answer 1

Answer:

power =height of object /height of image

Answer 2

Magnifying power decreases as length increases i.e Magnifying power depend on length.

Explanation:

When we increase the length of the tube of compound microscope there is a change in its magnifying powre i.e, its magnifying power is decreases.i.e

In magnifying case

M.P =$\frac{v}{u} x\frac{D}{u_{e} }$   when we increase the length then the value of eyepiece i.e (Ue) value increases then magnifying power also increases.

therefore MP Magnifying power is completely depend upon the length