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  • There are two plane mirror with reflecting surfaces facing each other .Both the mirrors are moving away from each other .A point

There are two plane mirror with reflecting surfaces facing each other .Both the mirrors are moving away from each other .A point object is placed between the mirrors. The velocity of the image formed due to nth reflection will be

a)nv

b)2nv

c)3nv

d)4nv

Answers (1)

There are two plane mirror with reflecting surfaces facing each other .Both the mirrors are moving away from each other .A point object is placed between the mirrors. The velocity of the image formed due to nth reflection will be

As you can see the first image formed is at a distance equal to 2 times of the distance between the mirrors. Similarly the distance between nth order image will be 2n times that distance. 

Hence we can conclude from this that the speed of nth order image will be equal to 2n times the speed of mirror. 

The velocity of the image formed due to nth reflection will be equal to 2nv

Posted by

Abhishek Sahu

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