CBSE Class 10 Science Notes Chapter 11 Human Eye and Colourful World

Human Eye:

The human eye consists of the cornea, iris, pupil, lens, retina, and optic nerve.
Eye defects include myopia (nearsightedness) and hypermetropia (farsightedness). Myopia is corrected with concave lenses, while hypermetropia is corrected with convex lenses.
Power of accommodation: The ability of the eye to focus on objects at different distances by changing the shape of the lens.

Colourful World:

White light consists of seven colors, which can be separated using a prism (dispersion).
Rainbow formation: Occurs due to the dispersion of sunlight by water droplets.
Scattering of light: Shorter wavelengths (blue) scatter more, making the sky appear blue.

This chapter explains the anatomy of the eye and optical phenomena related to light, like dispersion and scattering, fundamental to understanding color perception and vision.

Most Important Science Class 10 Questions Answers For Board Examination

Explain the structure and function of the human eye.
What is the power of accommodation? How does it help in focusing objects at different distances?
Describe how the dispersion of light leads to the formation of a rainbow.
Why does the sky appear blue?
How does the scattering of light differ from dispersion?

These questions focus on understanding eye structure, optical phenomena, and light behaviour.

Most Important MCQs Science Class 10 For Board Examination

Here are some MCQs related to Chapter 11: Human Eye and Colourful World:

What is the power of accommodation in the human eye? a) Ability to focus on distant objects
b) Ability to focus on nearby objects
c) Ability to see color
d) Ability to detect light intensity
Which of the following phenomena is responsible for the blue color of the sky? a) Refraction
b) Dispersion
c) Scattering
d) Reflection
What causes the formation of a rainbow? a) Reflection of light
b) Dispersion of light
c) Scattering of light
d) Absorption of light
What part of the eye controls the amount of light entering? a) Retina
b) Cornea
c) Pupil
d) Lens
The image formed on the retina is: a) Real and inverted
b) Real and erect
c) Virtual and inverted
d) Virtual and erect