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CBSE Class 10 Science Question 13 of 31

Light - Reflection and Refraction — Question 13

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Question 13

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

Answer

Magnification=−vu=height of imageheight of object\text{Magnification} = \dfrac{-v}{u} = \dfrac{\text{height of image}}{\text{height of object}} \\[1em]

Given,

+1=height of imageheight of object∴height of image=height of object+1 = \dfrac{\text{height of image}}{\text{height of object}} \\[1em] ∴ \text{height of image} = \text{height of object}

Hence, it means that the image formed by a plane mirror will be virtual and erect and it will be of the same size as the object.