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CBSE Class 12-science Answered

When a person is moving with a constant speed the speed of his/her image appears to increase substantially as he/she moves closer to the mirror as noticed by a person sitting in a stationary car. Why? 
Asked by prakriti12oct | 11 Feb, 2020, 02:48: PM
Expert Answer
We know, 
 
Vimage  = m2 Vobject
 
Vimage = Velocity of image
Vobject = Velocity of object 
 
So when the object is moving towards the convex mirror (mirror of vehicle used is rear view mirror) its magnification increases. As the magnification increases, the sqaure of magnification and product of it with velocity of object also increases. Thus, speed of image moving closer to stationary convex mirror appears to be increasing substantially even if the speed of object is constant. 
 
Answered by Shiwani Sawant | 12 Feb, 2020, 06:01: PM
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