Human eye and colourful world worksheets

The human eye and the colourful world Worksheet-7

41. How do we see colours ?

42. Why do different colours deviate through different angles on passing through a prism ?

43. Give the meaning of the term VIBGYOR. With which phenomenon is it connected ?

44. What is the condition for Raleigh scattering?

45. What is the order of wavelength of visible light ?

46. What is the size of an air molecule ?

The human eye and the colourful world Worksheet-8

54. Calculate maximum power of accommodation of a person having normal vision.

55. Why cannot we read a printed page by holding it very close to our eyes ?

56. What are the important features of visual system of a person?

57. The fax point of a myopic eye is 80 cm in front of the eye. What is the power of the lens required to enable him to see far off objects ?

58. What kind of lens is used in the spectacles of a person suffering from myopia (near sightedness) ?