Answer to Question #141903 in Optics for Sharfa

Question

A point source of light ‘o’ is placed at the principal axis of a bi-convex lens and the image is formed at ‘I’. If a plane mirror is placed perpendicular to the principal axis at ‘I’, the final image ( 1 ) is real and at the I.
( 2 ) is real and at the o.
( 3 ) is real and at the focus of the lens.
( 4 ) is virtual and at the I.
( 5 ) is virtual and behind the mirror.

Answer 1

(4) Is virtual and at the I.