PART - 3 CH - 9 Light-Reflection and Eefraction — Science STD 10 — Question
Gujarat BoardEnglish MediumSTD 10SciencePART - 3 CH - 9 Light-Reflection and Eefraction2 Marks
Question
The magnification produced by a plane mirror is 1. What does this mean?
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Answer
Here, m =+ 1 As.$m=\frac{h^{\prime}}{h} ; \quad \frac{h^{\prime}}{h}=+1 \quad \therefore h^{\prime}=h$ So, the size of the image is equal to the size of object. Further, the positive (plus) sign of m indicates that the image is erect and hence virtual. Again, $m=-\frac{v}{u}$ and $m=+1$ $\therefore-\frac{v}{u}=1 \quad \therefore v=-u$ This shows that the image is formed behind the mirror and the distance of the image from the mirror equals that of the object from the mirror.
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