Magnification produced by a rear view mirror fitted in vehicles

(a) is less than one

(b) is more than one

(c) is equal to one

(d) can be more than or less than one depending upon the position of the object in front of it

 

Answer

  • A convex lens is used in rear view mirrors to provide virtual, erect images of the traffic coming from behind in a car. 
  • A convex mirror always produces a diminished image.
  • This is also why rear view mirrors come with the warning “objects in this mirror may be closer than they appear”. 
  • Thus, the magnification of a rear view mirror is m < 1

convex-mirror---object-at-between-infinity-and-pole---teachoo.jpg

So, the correct answer is (a)

  1. Class 10
  2. Chapter 10 Class 10 - Light - Reflection and Refraction (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo