TS EAMCET · Physics · Ray Optics
An object \(O\) is placed at \(7 \mathrm{~cm}\) to the left of a concave mirror of radius of curvature \(12 \mathrm{~cm}\) as shown in the figure. The position of the image will be at a distance of
- A \(20 \mathrm{~cm}\) from the mirror to the left.
- B \(30 \mathrm{~cm}\) from the mirror to the right.
- C \(42 \mathrm{~cm}\) from the mirror to the left.
- D \(42 \mathrm{~cm}\) from the mirror to the right.
Answer & Solution
Correct Answer
(C) \(42 \mathrm{~cm}\) from the mirror to the left.
Step-by-step Solution
Detailed explanation
Given, distance between object and mirror, \(u=-7 \mathrm{~cm}\) Radius of curvature, \(R=-12 \mathrm{~cm}\) \(\therefore\) Focal length, \(f=-\frac{12}{2}=-6 \mathrm{~cm}\) From mirror formula, \(\frac{1}{v}+\frac{1}{u}=\frac{1}{f}\) Putting the given values,…
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