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A convex mirror is used as a driving mirror because…

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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




Convex mirrors are often used as drivers mirrors because they form virtual, upright (erect), and diminished images making it possible to view a larger field behind the vehicle.

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  • I is correct, its image is erect
  • II is correct, its images are diminished, offering a wider field of view.
  • III is wrong, the focal length of convex mirrors does not matter.

Now for the right answer to the above question:

  1. Option A is incorrect. III is wrong
  2. Option B is correct.
  3. C is incorrect. I is correct, III is wrong
  4. D is not the correct answer. III is wrong


You may please note these/this:

  • Images formed by convex mirrors are usually erect, virtual, and diminished irrespective of the position of the object.

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/ culled from 2017 JAMB-UTME physics question 32 /

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