NEET · Physics · STD 12 - 9. Ray optics and optical instruments
A point object is placed at a distance of \(60\, \mathrm{~cm}\) from a convex lens of focal length \(30 \,\mathrm{~cm}\). If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of \(40\, \mathrm{~cm}\) from it, the final image would be formed at a distance of :
- A \(20\, \mathrm{~cm}\) from the lens, it would be a real image.
- B \(30 \,\mathrm{~cm}\) from the lens, it would be a real image.
- C \(30 \,\mathrm{~cm}\) from the plane mirror, it would be a virtual image.
- D \(20 \,\mathrm{~cm}\) from the plane mirror, it would be a virtual image.
Answer & Solution
Correct Answer
(D) \(20 \,\mathrm{~cm}\) from the plane mirror, it would be a virtual image.
Step-by-step Solution
Detailed explanation
First for image formation from lens \(\mathrm{u}=-60\, \mathrm{~cm}\)
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