A convex mirror is used as a driving mirror because
- I. Its image is erect
- II. It has a large field of view
- III. It has a long focal length
Identify the correct statement(s).
A. I and III only
B. I and II only
C. II and III only
D. I, II, and III only
E. I only
Images formed by convex mirrors are:
- Diminished and
So, let’s analyzed each of the point:
- Its image is indeed erect (or upright).
- Yes, its image has a large field of view because it forms a diminished image, a magnified image would have limited its field of view.
- The focal length does not matter for a convex mirror, it will always form the same kind of image.
Now for the right answer to the above question:
- A is not the right answer. III isn’t true.
- B is correct.
- C is incorrect. III isn’t true.
- D is incorrect. III isn’t true.
- I and II are correct.
You may please note this/these:
- Large field of view simply means large coverage.
- Diminished image would give room for wider coverage.
- The nature of images formed by a convex mirror is the same irrespective of its focal length.
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/ culled from 2020 JAMB-UTME physics past question 21 /