Human Eye and the Colourful World-Important Questions

1.   What is a diameter of human eye?

2.   What is the function of crystalline lens of human eye?

3.   In which type of eye defect far point of the eye gets reduced?

4.   Why do birds fly back to their nest in the evening?

5.   Why do you take time to find object when you enter in dim lighted room from outside in the sun?

6.   Why does ray of light splits when passed from prism?

7.   Why doesn�t planet appear to be twinkling?

8.   Why we can�t see things very close to our eyes?

9.   When we see any object through the hot air over the fire, it appears to be wavy, moving slightly. Explain.

10.   Why does sky appear blue on a clear day?