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Assertion (A) : Plane and… (Class 12 Physics 2024, Q16)

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PhysicsCBSE Class 12 · Board exam 2024, set 55/1/1 · 1 mark · Assertion-reason

CBSE Class 12 Physics 2024: question 16

Set in the CBSE Class 12 board exam of 2024, paper 55/1/1, section A, question 16, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q16 · 1 mark · Assertion-reasonCompetency-basedRay Optics and Optical Instruments

Assertion (A) : Plane and convex mirrors cannot produce real images under any circumstance.
Reason (R) : A virtual image cannot serve as an object to produce a real image.

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  3. (C)Assertion (A) is true, but Reason (R) is false.
  4. (D)Assertion (A) is false and Reason (R) is also false.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 55/1/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Consider converging rays falling on the mirror.

Hint 2

Think of the image from one optical element acting as the object for the next.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. A plane or convex mirror can form a real image when the object is virtual, i.e. rays converging towards a point behind the mirror. So A is false.

  2. A virtual image can act as an object for another lens or mirror and produce a real image, so R is also false. Option (D).

    1 mark

Answer: Option (D)

Where the marks are

  • Shows a virtual object gives a real image, so both A and R are false (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Ray Optics and Optical Instruments, one at a time, marked against the answer key and marking points.Back to the full paper2024 board paper, set 55/1/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.