Question

A lens forms a real image at 40 cm. If one half of the aperture of the le
is covered by black paper, what happen to the image distance ?​

Answer 1

Answer:

nothing woul happen to the image distance just the image will be less brighter

Answer 2

Answer:

altitudes, medians, and angle bisectors are different segments. In certain triangles, though, they can be the same segments. In Figure , the altitude drawn from the vertex angle of an isosceles triangle can be proven to be a median as well as an angle bisector.