The Human Eye and the Colourful World
Tripura Board · Class 10 · Science
Flashcards for The Human Eye and the Colourful World — Tripura Board Class 10 Science. Quick Q&A cards covering key concepts, definitions, and formulas.
Interactive on Super Tutor
Studying The Human Eye and the Colourful World? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.
1,000+ Class 10 students started this chapter today
This is just one of 14+ visuals inside Super Tutor's The Human Eye and the Colourful World chapter
Explore the full setWhat is the power of accommodation of the human eye?
Answer
The ability of the eye lens to adjust its focal length to focus objects at different distances clearly on the retina. When ciliary muscles relax, the lens becomes thin (long focal length) for distant …
Why can't you read a book held very close to your eyes?
Answer
The eye lens cannot decrease its focal length below a minimum limit. Objects closer than 25 cm (near point) cannot be focused properly on the retina, causing blurred vision and eye strain. This is why…
A student can see the blackboard clearly when sitting in the front row but struggles to read it from the back. What vision defect does this indicate?
Answer
Myopia (near-sightedness). The student can see nearby objects clearly but distant objects appear blurred because the image forms in front of the retina instead of on it. This occurs due to excessive c…
How is myopia corrected and why does this method work?
Answer
Myopia is corrected using a concave (diverging) lens. The concave lens diverges the light rays before they enter the eye, effectively moving the image backward to form on the retina instead of in fron…
An elderly person holds a newspaper at arm's length to read it. What vision defect does this suggest?
Answer
Hypermetropia (far-sightedness). The person can see distant objects clearly but needs to hold near objects farther away because the image forms behind the retina. This occurs when the eye lens focal l…
How is hypermetropia corrected?
Answer
Hypermetropia is corrected using a convex (converging) lens. The convex lens provides additional converging power to help focus light rays on the retina instead of behind it. This enables clear vision…
Why do people over 40 often need reading glasses?
Answer
Presbyopia occurs due to aging. The ciliary muscles weaken and the eye lens loses flexibility, reducing the power of accommodation. The near point gradually moves away from 25 cm, making it difficult …
What are bifocal lenses and when are they used?
Answer
Bifocal lenses contain both concave and convex lenses in one frame. The upper portion (concave) corrects myopia for distant vision, while the lower portion (convex) corrects hypermetropia for near vis…
+12 more flashcards available
Practice AllFrequently Asked Questions
What are the important topics in The Human Eye and the Colourful World for Tripura Board Class 10 Science?
How to score full marks in The Human Eye and the Colourful World — Tripura Board Class 10 Science?
How many flashcards are available for The Human Eye and the Colourful World?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for The Human Eye and the Colourful World
Important Questions
Practice with board exam-style questions
Syllabus
What topics to cover
Revision Notes
Key points for last-minute revision
Study Plan
Step-by-step plan to ace this chapter
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Practice Quiz
Test yourself with a quick quiz
Concept Maps
See how topics connect visually
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full The Human Eye and the Colourful World chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Tripura Board Class 10 Science.