The formation of image with simple microscope is shown below.
Here, θ′=u0​h​=Dh′​=25h′​ where, D=25cm (least distance of distinct vision) Here, θ′ is same for both object and image, hence Assertion is true. Magnification, m=θθ′​=u0​D​ Hence, if u0​<D(25cm), hence the value of θ′ will obtain large. So, option (c) is the correct.