Human eye and colourful world worksheets

The human eye and the colourful world Worksheet-1

1. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to

A. presbyopia                                B. near sightedness

C. accommodation                       D. far-sightedness

2. The human eye forms the image of an object at its

A. cornea           B. pupil              C. iris                  D. retina

The human eye and the colourful world Worksheet-2

11. Colour blind person may have

A. normal vision 

B. defective vision

C. sometimes normal and sometimes defective vision

D. cannot say

12. Focal length of eye lens is

A. fixed

B. variable

C. sometimes fixed and sometimes variable

D. cannot say

The human eye and the colourful world Worksheet-3

21. Which of the colours of visible light has minimum frequency?

A. violet              B. red                  C. yellow            D. green

22. In which spectrum, there is no overlapping of colours ?

A. pure spectrum                         B. impure spectrum