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JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments

\(30 \mathrm{~cm}\) વક્રતા ત્રિજ્યા ધરાવતો બહિર્ગોળ અરીસો વસ્તુના અડધા કદ જેટલું પ્રતિબિંબ રચે છે. તો વસ્તુનું સ્થાન_____છે.

  1. A  \(-15 \mathrm{~cm}\)
  2. B \(45 \mathrm{~cm}\)
  3. C \(-45 \mathrm{~cm}\)
  4. D  \(15 \mathrm{~cm}\)
Verified Solution

Answer & Solution

Correct Answer

(A)  \(-15 \mathrm{~cm}\)

Step-by-step Solution

Detailed explanation

\( \text { Given } R=30 \mathrm{~cm} \) \( \mathrm{f}=\mathrm{R} / 2=+15 \mathrm{~cm}\) Magnification \((\mathrm{m})= \pm \frac{1}{2}\) For convex mirror, virtual image is formed for real object. Therefore, \(\mathrm{m}\) is +ve \( \frac{1}{2}=\frac{f}{f-u} \)…
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