The Human Eye and the Colourful World — Flashcards
Karnataka Board · Class 10 · Science
20 flashcards for The Human Eye and the Colourful World (Karnataka Board Class 10 Science) to test yourself on key terms and facts.
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.
Free trial, no card needed.
A student sitting in the last row cannot see the blackboard clearly but can read books easily. What vision defect does the student have and how can it be corrected?
Answer
The student has myopia (near-sightedness). They can see nearby objects clearly but distant objects appear blurred. This occurs because the image forms in front of the retina. Correction: Use a concave…
What 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 on the retina. Ciliary muscles control this by changing the lens curvature - relaxed muscles make lens th…
An elderly person needs to hold a book at arm's length to read comfortably. What condition do they have and why does this occur?
Answer
They have presbyopia. This occurs due to weakening of ciliary muscles and loss of flexibility of the eye lens with age. The near point moves farther away from the normal 25 cm. Correction requires con…
When white light passes through a glass prism, why do we see different colors and which color bends the most?
Answer
Different colors have different wavelengths and bend through different angles when refracted. This is called dispersion. Violet light bends the most (shortest wavelength) and red light bends the least…
What are the near point and far point for a normal human eye?
Answer
Near point: 25 cm (minimum distance for clear vision without strain). Far point: Infinity (maximum distance for clear vision). A normal eye can see objects clearly between 25 cm and infinity.
Why do stars twinkle but planets don't?
Answer
Stars appear as point sources due to huge distance. Atmospheric refraction causes their apparent position to fluctuate, making them twinkle. Planets are closer and appear as extended sources - light v…
A person can see objects clearly only up to 1.2 m. What type of lens should be used to correct their vision?
Answer
The person has myopia (far point is 1.2 m instead of infinity). Use a concave lens of appropriate power. The lens should make parallel rays from distant objects appear to come from 1.2 m, bringing the…
Why is the sky blue during daytime?
Answer
Blue light has shorter wavelength and gets scattered more by tiny particles in atmosphere (Rayleigh scattering). When sunlight enters atmosphere, blue light scatters in all directions and reaches our …
+12 more flashcards
Practise AllFrequently Asked Questions
What are the important topics in The Human Eye and the Colourful World for Karnataka Board Class 10 Science?
How many flashcards are available for The Human Eye and the Colourful World?
How should I revise The Human Eye and the Colourful World for the Karnataka Board Class 10 board exam?
Sources & Official References
- Karnataka SSLC — kseeb.kar.nic.in
- Dept of Pre-University Education, Karnataka
- National Education Policy 2020 — education.gov.in
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
For serious students
Get the full The Human Eye and the Colourful World chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Karnataka Board Class 10 Science. Free to start, no card needed.