JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
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)
- A Inverted, real and magnified
- B Erect, virtual and magnified
- C Erect, virtual and unmagnified
- D Inverted, real and unmagnified
Answer & Solution
Correct Answer
(D) Inverted, real and unmagnified
Step-by-step Solution
Detailed explanation
\(f =\frac{-8}{2}=-4 cm\) \(u =-10 cm\) \(v=?\) as \(\frac{1}{v}+\frac{1}{u}=\frac{1}{f}\) \(\frac{1}{v}+\left(\frac{1}{-10}\right)=\frac{1}{-4}\) \(\frac{1}{v}=\frac{1}{10}-\frac{1}{4}\) \(\frac{1}{v}=\frac{4-10}{40}\) \(v=\frac{40}{-6}\) \(V =\frac{-20}{3}\)…
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