need it very fast!

Asked by  | 23rd Mar, 2010, 10:49: PM

Expert Answer:

When a ray of light strikes a medium boundary at an angle larger than a particular angle called critical angle with respect to the normal to the surface, it'll not be refracted into another medium but instead will be reflected back in the same medium.




Answered by  | 24th Mar, 2010, 08:43: AM

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