Question

Which of the following is incorrect?
(1) A thin convex lens of focal length f, is placed
in contact with a thin concave lens of focal
length f. The combination will act as convex
lens if f, <f
(2) Light on reflection at water-glass boundary will
undergo a phase change of it
3) Spherical aberration is minimized by
achromatic lens
(4) If the image of distant object is formed in front
of the retina then defect of vision may be
myopia​

Answer 1

Answer:

option 2)light on reflection at water glass boundary will undergo a phase change of it is your answer.