What is the cause of dispersion of white light passing through a prism? Which colour of light deviates the (1) most (2) least? (2 marks) Why does the clear sky appear blue? How would the sky appear in the absence of earth’s atmosphere? (2 marks) The refractive indices of alcohol and turpentine oil with respect to air are 1.36 and 1.47 respectively. Find the refractive index of turpentine oil with respect to alcohol .Which one of these will permit the light to travel faster? (2 marks) Why do we observe difference in colours of the sun during sunrise sunset and noon? (2 marks) Describe the formation of rainbow in the sky with the help of diagram? (2 marks) What is a rainbow? Explain in brief the formation of rainbow? (3 marks) A person cannot see objects farther than 12 m from the eye clearly. Name the , defect of vision he I suffering from and the lens that should be used for correction of this defect. Illustrate with the help of a diagram, how this lens will correct the defective vision. (3 marks)
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Dispersion is a process in which particles have been acting homogeneously and suspended in the white light.
In addition to this, it considers the seven colors and that have been taken according to the color and heat should be reflecting of the prism.
It includes various colors and thus is suffering refraction and hence capable for separating with Rayleigh scattering and explain it the blue color of the sky.
It reflects violet color and further separate from the blue color of the sky.
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