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Assertion (A) : Myopic eye… (Class 10 Science 2024, Q19)

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ScienceCBSE Class 10 · Board exam 2024, set 31/2/1 · 1 mark · Assertion-reason

CBSE Class 10 Science 2024: question 19

Set in the CBSE Class 10 board exam of 2024, paper 31/2/1, section A, question 19, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q19 · 1 mark · Assertion-reasonCompetency-basedThe Human Eye and the Colourful World

Assertion (A) : Myopic eye cannot see distant objects distinctly.
Reason (R) : For the correction of myopia converging lenses of appropriate power are prescribed by eye-surgeons.

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

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 31/2/1.

Hints

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

Hint 1

In myopia, where does the image of a distant object form?

Hint 2

Which lens moves the image back onto the retina?

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) is true: a myopic eye sees near objects clearly but not distant ones.

    ½ mark

  2. (R) is false: myopia is corrected with a concave (diverging) lens of suitable power. Option (C) is correct.

    ½ mark

Answer: Option (C)

Where the marks are

  • Selects option (C) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from The Human Eye and the Colourful World, one at a time, marked against the answer key and marking points.Back to the full paper2024 board paper, set 31/2/1: 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.