What will the value of angular magnification be if the final image is formed at near point, instead of infinity?

Q. The value of angular magnification if the final image is formed at near point, instead of infinity is .

Q. Show that, if you place the object so that the image is at your near point instead of at infinity, the angular magnification is increased to the value
$\alpha =\frac{d}{f}+1$

Q. In this case (image at near point(D)). Find the angular magnification in terms of D and f.

Q. The magnification produced by an astronomical telescope when the final image is formed at infinity is $10$ and the length of the telescope is $1.1\text{m}$. The magnification when the final image is formed at least distance of distinct vision is -

Q.

In this case (image at near point(D)). Find the angular magnification in terms of D and f.