This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > The Human Eye And The Colourful World > Class 10 Science Chapter 11 The Human Eye And The Colourful World – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 11 The Human Eye And The Colourful World Quiz 2 (34 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When light touches the surface of a prism refraction takes place, in simple terms the light A) Bends. B) Curls up. C) Gets longer. D) Straightens. Show Answer Correct Answer: A) Bends. 2. Scattering of light by colloidal solution is known as A) Scattering. B) Dispersion. C) Tyndall effect. D) Stability. Show Answer Correct Answer: C) Tyndall effect. 3. Which colour has least refractive index? A) Violet. B) Red. C) Yellow. D) Blue. Show Answer Correct Answer: B) Red. 4. Where is the image formed in Eye? A) Cornea. B) Iris. C) Pupil. D) Retina. Show Answer Correct Answer: D) Retina. 5. A white light falls on a glass prism, the least deviated colour is- A) Orange. B) Red. C) Violet. D) Yellow. Show Answer Correct Answer: B) Red. 6. The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem? A) Concave lens, 1.25 D. B) Convex lens, 1.25 D. C) Concave lens, -1.25 D. D) Convex lens, -1.25 D. Show Answer Correct Answer: C) Concave lens, -1.25 D. 7. The least distance of distinct vision is also called A) Myopia. B) Blind spot. C) Near point. D) Far point. Show Answer Correct Answer: C) Near point. 8. What is the time difference between actual sunset and apparent sunset? A) 2 minutes. B) 20 minutes. C) 20 seconds. D) 2 seconds. Show Answer Correct Answer: A) 2 minutes. 9. Planets twinkle. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. Angle of deviation is A) Angle by which incident ray deviates through prism. B) Angle between incident ray and refracted ray. C) Angle between incident ray and normal. D) None of the above. Show Answer Correct Answer: A) Angle by which incident ray deviates through prism. 11. A person needs a lens of power-5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision? A) -0.67 m, 0.67 m. B) -0.67 m, 0.18 m. C) -0.18 m, 0.67 m. D) -0.18 m, -0.67 m. Show Answer Correct Answer: B) -0.67 m, 0.18 m. 12. Which color of light is most refracted during dispersion by a prism? A) Yellow. B) Red. C) Violet. D) Green. Show Answer Correct Answer: C) Violet. 13. What is the phenomenon of light is divided into seven components of white light? A) Curvature. B) Racism. C) Division. D) Reflection. Show Answer Correct Answer: C) Division. 14. A hypermetropic person has near point farther away from the normal near point (25 cm) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. A myopic person has the far point nearer than infinity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. How many surface does a triangular prisam have? A) 3. B) 6. C) 5. D) 4. Show Answer Correct Answer: C) 5. 17. Angle of deviation will be maximum for ..... colour A) Red. B) Violet. C) Green. D) None of the above. Show Answer Correct Answer: B) Violet. 18. The image formed on the retina of the human eye is A) Virtual and inverted. B) Real and inverted. C) Virtual and erect. D) Real and erect. Show Answer Correct Answer: B) Real and inverted. 19. Power of accommodation of eye(max. variation in power of eye lens) of a normal eye is about A) Hd. B) 1D. C) May. D) Zd. Show Answer Correct Answer: A) Hd. 20. When light travels through a prism it spits the white light into ..... colours A) 3. B) 9. C) 5. D) 7. Show Answer Correct Answer: D) 7. 21. This is used to separate white light into colors. A) Sunlight. B) Spectrum. C) Prism. D) Reflection. Show Answer Correct Answer: C) Prism. 22. The deflection of light by minute particles and molecules of the atmosphere in all direction is called ..... of light. A) Tyndell effect. B) Scattering. C) Reflection. D) Interference. Show Answer Correct Answer: B) Scattering. 23. Rods help in ..... vision A) Peripheral. B) Detailed central. C) Emmetropia. D) Colour. Show Answer Correct Answer: A) Peripheral. 24. The muscular diaphragm that controls the size of the pupil is A) Iris. B) Retina. C) Cornea. D) Ciliary muscles. Show Answer Correct Answer: A) Iris. 25. For donation eyes must be removed within ..... hours after death. A) After 24hrs. B) 4-6hrs. C) 1-12hrs. D) 10-15hrs. Show Answer Correct Answer: B) 4-6hrs. 26. Why is a normal eye not able to see clearly the objects placed closer than 25 cm? A) The lens becomes too thin. B) The lens cannot adjust its focal length. C) The lens cannot adjust its power. D) The lens becomes too thick. Show Answer Correct Answer: A) The lens becomes too thin. 27. The optic nerve cells that are more sensitive to bright light and help in detailed central vision are called A) Cons. B) Cranial nerves. C) Cornea. D) Rods. Show Answer Correct Answer: A) Cons. 28. The lens becomes ..... to focus nearby objects A) Thinner. B) Thicker. C) None. D) None of the above. Show Answer Correct Answer: B) Thicker. 29. Light enters the eye through a thin membrane called the A) Pupil. B) Iris. C) Retina. D) Cornea. Show Answer Correct Answer: D) Cornea. 30. The period between the actual sunset and the apparent sunset is approximately ..... minutes? A) 1. B) 4. C) 2. D) 3. Show Answer Correct Answer: C) 2. 31. Which of the following colour has the least wavelength? A) Red. B) Blue. C) Orange. D) Violet. Show Answer Correct Answer: D) Violet. 32. Following is far-sightedness A) Myopia. B) Hypermatropia. C) Presbyopia. D) All of the above. Show Answer Correct Answer: B) Hypermatropia. 33. The air layer of atmosphere whose temperature is less than the hot layer behave as optically A) Inactive medium. B) Either denser or rarer medium. C) Rarer medium. D) Denser medium. Show Answer Correct Answer: D) Denser medium. 34. For persons suffering from near-sightedness the power of the lend used in spectacles is ..... A) Positive. B) Negative. C) Infinite. D) Zero. Show Answer Correct Answer: B) Negative. ← PreviousRelated QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 11 The Human Eye And The Colourful World Quiz 1 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books