Open GL Question:

Give a brief comparison between ambient, diffuse, specular, & emissive light.
Write a little code snippet for creating a light source.
What do you understand by attenuation factor? What is its role in lighting?
Name the lighting models that are available in OpenGL.
Explain the effect of diffuse & specular reflection over a material.
How to achieve lighting effects in color index mode?
What do you understand by antialiasing? Is it good to use antialiasing in our application? If yes, then why most of the applications do not use it ?
What do you understand by blending? What role it plays in rendering graphics ? How it can be implemented in OpenGL?
Write a small program to add fog effect to the application.