Chapter 1: Light - Reflection and Refraction

Q&A -Ask Doubts and Get Answers

Q
Light - Reflection and Reflection

Question:

The magnification produced by a plane mirror is +1. What does this mean?

Answer:

We know,

m=frac{h_i}{h_o}=frac{v}{u}

When m = +1

{h}_{i} = {h}_{0} -------(1)

And, v = -u ------(2)

From result (1) we can conclude that the size of the image formed is equal to the size of the object and image formed is erect.

And, in the result (2) the opposite signs of ν and u indicate that image is formed on the other side of the mirror from where the object is placed i.e., image is formed behind the mirror and thus image formed is virtual.


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