Optics 7 Question 27
28. Which of the following form(s) a virtual and erect image for all positions of the object?
(1996, 2M)
(a) Convex lens
(b) Concave lens
(c) Convex mirror
(d) Concave mirror
Show Answer
Solution:
- For a lens
, i.e.
For a concave lens,
For a mirror :
Here,