The Human Eyes and The Colorful World

Question 1 What is meant by scattering of light? Question 2 What is Tyndall effect?Give few examples? Question 3 What happens when a beam of sunlight enters a dusty room through a window? Question 4 Why does the sky appear blue on a clear day? Question 5 Why does sky appear black to an astronaut instead of blue? Question 6 Why does Sun appear red at … [Read more...] about Scattering of Light

Question 1 What is atmospheric refraction? Question 2 What causes atmospheric refraction? Question 3 Why the Sun can be seen about two minutes before actual sunrise? Question 4 Explain why if we look at objects through the hot air over a fire, the objects appear to be moving slightly? Question 5 Why do stars twinkle at night in sky? Question 6 Why planets do not … [Read more...] about Atmospheric Refraction

Question 1 What happens when a ray of light is passed through a triangular glass prism? Question 2 What will happen if another similar glass prism is placed upside down behind the first prism? Question 3 Define the term angle of prism? Question 4 What is spectrum?What is the name of glass shape used to produce a spectrum? Question 5 Write the various colours of … [Read more...] about Glass Prism

Question 1 What is myopia? State the two causes of myopia? Question 2 With the help of  ray diagram, show the eye defect myopia and correction of myopia using a lens? Question 3 What is hypermetropia? State the two causes of hypermetropia? Question 4 With the help of  ray diagram, show the eye defect hypermetropia and correction of hypermetropia using a … [Read more...] about Defects Of Vision and their Correction

Question 1 Describe the working of the human eye with the help of a diagram? Question 2 Explain the function of cornea, iris, pupil, ciliary muscles, eye-lens, retina, optic nerve? Question 3 How does the eye adjust itself to deal with light of varying intensity? Question 4 If you walk from a dark room into sunlight and back again into dark room, how would your pupils … [Read more...] about Human Eye