Question

If'm' represents magnificaiton of a lens. Assume the object to be real then among the followin
option is
a) m is +VE, when image formed by convex lens is virtual
b) m is -VE, when image formed by concave lens is virtual
c) m is +VE, when image formed by concave lens is real
d) 'm' may be positive, when image formed by convex lens is virtual​

Answer 1

option A is the correct answer

Magnification of a concave lens or a convex mirror is always positive because they always form virtual and erect images. It can be negative or positive for a convex lens or a concave mirror.

Positive magnification for virtual images and negative magnification for real images is true only when a single optical device is used. When used as a combination, a virtual and inverted image may be formed. One such example is a compound microscope.

Option A is correct

Answer 2

Answer:

A is correct dear .why you delete my answer