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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [2] straightforward exam-ready
The power of accommodation of a person's eye gradually decreases as they grow older. Name this condition and state TWO reasons for its occurrence.
Generated by claude-sonnet-4-6 · 2026-06-26 01:08 · grounding rag
Model Answer

Presbyopia is the condition in which the power of accommodation of the eye decreases with age.

Two reasons:

  1. Gradual weakening of the ciliary muscles.
  2. Diminishing flexibility (reduced elasticity) of the eye lens.

Source: Defects of Vision and Their Correction, Chapter 10

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Explanation

The question asks for the name (1 mark) and two reasons (1 mark). Examiners expect the exact term presbyopia — not just a description. The two reasons must come directly from the textbook: ciliary muscle weakening and reduced lens flexibility. Do not confuse presbyopia with hypermetropia (far-sightedness), which is a separate defect. No diagram or correction method is needed here.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.