The Human Eye and Colourful World (10 Science)
The human eye is a complex optical instrument that allows us to see the world. Understanding its structure and function helps explain vision and optical ph
TL;DR: The human eye is a complex optical instrument that allows us to see the world. Understanding its structure and function helps explain vision and optic…
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The human eye is a complex optical instrument that allows us to see the world. Understanding its structure and function helps explain vision and optical ph
The Human Eye and Colourful World MCQs with Answers & Explanations
Q1. Which part of the eye acts as a lens?
- Cornea
- Iris
- Lens ✓ (correct)
- Retina
Q2. What is the function of the iris?
- Focus light
- Detect light
- Control pupil size ✓ (correct)
- Transmit light
Q3. Which part of the eye is sensitive to light?
- Cornea
- Lens
- Retina ✓ (correct)
- Sclera
Q4. What does the ciliary muscle control?
- Iris opening
- Lens shape ✓ (correct)
- Pupil dilation
- Tear production
Q5. Near-sightedness is also called:
- Hyperopia
- Myopia ✓ (correct)
- Presbyopia
- Astigmatism
Q6. Which type of lens is used to correct myopia?
- Convex lens
- Concave lens ✓ (correct)
- Cylindrical lens
- No lens
Q7. What is the normal near point of the human eye?
- 10 cm
- 15 cm
- 25 cm ✓ (correct)
- 50 cm
Q8. Which colour of light has the longest wavelength in visible spectrum?
- Violet
- Green
- Blue
- Red ✓ (correct)
Q9. What is dispersion of light?
- Bending of light
- Splitting of white light into colors ✓ (correct)
- Reflection of light
- Scattering of light
Q10. Who discovered the spectrum of white light using a prism?
- Galileo
- Isaac Newton ✓ (correct)
- Huygens
- Young
Frequently Asked Questions
What is accommodation in the human eye?
Accommodation is the ability of the eye to change the focal length of the lens to focus on objects at varying distances. This is achieved by the ciliary muscles changing the shape of the lens.
What causes a rainbow to form?
A rainbow forms due to dispersion and reflection of sunlight in water droplets. White sunlight enters the droplet, gets dispersed into colors, reflects internally, and exits as separate colored rays.
More 10 Science MCQs
- Light Reflection and Refraction
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
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