The Human Eye and the Colourful World — Question 2
Back to all questionsQuestion 2
The human eye forms the image of an object at its
- cornea
- iris
- pupil
- retina
retina
Reason — The eye lens forms an inverted real image of the object on the retina.
Key Concepts Covered
This question tests your understanding of the following concepts from the chapter The Human Eye and the Colourful World: Question, Human, Eye, Forms, Image, Object. These are fundamental topics in Science that students are expected to master as part of the CBSE Class 10 curriculum.
A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This Question
Read the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to Remember
- Read the question carefully and identify all parts before answering.
- Use the terminology specific to this subject and chapter.
- Review the textbook content for this chapter before attempting questions.
- Practice writing concise, well-structured answers within time limits.
Practice more questions from The Human Eye and the Colourful World — Science, Class 10 CBSE
Chapter 10: The Human Eye and the Colourful World — Quick Revision Guide
Introduction
The human eye is a natural optical instrument. This chapter explains how the eye works, defects of vision and their correction, and beautiful phenomena like dispersion, atmospheric refraction, and scattering of light.
Key Points at a Glance
- Eye: cornea (refraction) → iris/pupil (light control) → lens (fine focus) → retina (image) → optic nerve → brain
- Accommodation: eye lens changes focal length using ciliary muscles; near point = 25 cm, far point = ∞
- Myopia: can't see far; image before retina; corrected by concave lens
- Hypermetropia: can't see near; image behind retina; corrected by convex lens
- Presbyopia: age-related; corrected by bifocal lens; Cataract: opaque lens; corrected by surgery
- Dispersion: white light splits into VIBGYOR through prism; violet deviates most, red least
- Atmospheric refraction: twinkling of stars, advanced sunrise/delayed sunset (~2 min each)
- Scattering: intensity ∝ 1/λ4; blue sky (short λ scattered more); red sunrise/sunset (blue scattered away); white clouds (all λ scattered equally by large droplets)
- Tyndall effect: scattering by colloidal particles; visible beam in dusty room, fog
Real-World Connections
Eye donations restore sight; LASIK surgery reshapes cornea; blue colour of sky and red sunsets explained by scattering; danger signals are red because red light travels farthest.
Quick Self-Test (5 Questions)
- What is the most important concept you learned from this chapter?
- Can you write three key equations/formulae from this chapter from memory?
- Draw a labelled diagram relevant to this chapter without looking at your notes.
- Explain one real-world application of a concept from this chapter.
- What is one common mistake students make in this chapter, and how can you avoid it?
Further Study
- NCERT Textbook Chapter 10
- NCERT Exemplar Problems
- Bright Tutorials Detailed Notes: ch10-human-eye.html
- Bright Tutorials Practice Questions: ch10-human-eye.html
- Previous Year CBSE Board Papers