Solve this following


A spherical mirror is obtained as shown in the figure from a hollow glass sphere. If an object is positioned in front of the mirror, what will be the nature and magnification of the image of the object ? (Figure drawn as schematic and not to scale)



  1. Inverted, real and magnified

  2. Erect, virtual and magnified

  3. Erect, virtual and unmagnified

  4. Inverted, real and unmagnified

Correct Option: 1


$\mathrm{f}=\frac{-8}{2}=-4 \mathrm{~cm}$

$\mathrm{u}=-10 \mathrm{~cm}$


as $\frac{1}{v}+\frac{1}{u}=\frac{1}{f}$







$\mathrm{m}=\frac{-\left(-\frac{20}{3}\right)}{-10} \Rightarrow \mathrm{m}=\frac{-2}{3}$

or image will be real, inverted and unmagnified.


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