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PHYSICS | Human Eye-A
📝 Questions: 50
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Q1. The transparent front part of the eye that protects it and allows light to enter is called:
Q2. Which part of the eye controls the amount of light entering through the pupil?
Q3. Where is the image formed in a human eye?
Q4. What is the function of the eye lens?
Q5. The ability of the eye lens to change its focal length is called:
Q6. Which muscles are responsible for changing the shape of the eye lens?
Q7. For a normal adult eye, what is the approximate least distance of distinct vision?
Q8. When we look at a distant object, what happens to the ciliary muscles and the lens?
Q9. A major advantage of having two eyes instead of one is better:
Q10. Having two eyes also increases the:
Q11. Which common eye defect is also known as nearsightedness?
Q12. What is the main cause of myopia?
Q13. What type of lens is used to correct myopia?
Q14. Which common eye defect is also known as farsightedness?
Q15. What is the main cause of hypermetropia?
Q16. What type of lens is used to correct hypermetropia?
Q17. The age-related defect where the eye gradually loses its power of accommodation is called:
Q18. How is presbyopia commonly corrected?
Q19. What is the name of the phenomenon where white light splits into its component colours?
Q20. Which optical element is typically used to demonstrate dispersion?
Q21. When white light passes through a prism, which colour deviates the least?
Q22. When white light passes through a prism, which colour deviates the most?
Q23. The band of colours obtained after dispersion of white light is called a:
Q24. What happens when the ciliary muscles contract?
Q25. What is the role of the optic nerve?
Q26. The small, central area of the retina with the sharpest vision is called the:
Q27. The point where the optic nerve leaves the eye is called the:
Q28. What are the photoreceptor cells sensitive to dim light called?
Q29. What are the photoreceptor cells responsible for colour vision called?
Q30. The persistence of an image on the retina for about 1/16th of a second after removal of the object is called:
Q31. In a myopic eye, the image of a distant object is formed:
Q32. The far point of a myopic eye is:
Q33. In a hypermetropic eye, the image of a nearby object is formed:
Q34. The near point of a hypermetropic eye is:
Q35. The power of a lens is measured in units called:
Q36. A concave lens has a power that is:
Q37. A convex lens has a power that is:
Q38. What is the white, tough outer layer of the eyeball called?
Q39. The middle layer of the eye, which contains blood vessels, is called the:
Q40. The splitting of white light into colours occurs because different colours have different:
Q41. A person uses spectacles with concave lenses. What is the defect of vision?
Q42. A person uses spectacles with convex lenses. What could be the defect of vision?
Q43. The ability of the eye to see objects both near and far is due to the:
Q44. The fluid present between the cornea and the lens is called:
Q45. The phenomenon of bending of light when it goes from one medium to another is called:
Q46. In the human eye, refraction of light mainly occurs at the:
Q47. The far point of a normal eye is:
Q48. Which part of the eye is primarily responsible for the eye's colour (e.g., blue, brown)?
Q49. What happens to the pupil in bright light?
Q50. What happens to the pupil in dim light?
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