Answers

2015-10-04T01:47:15+08:00
WHEN A RAYS PASSED FROM RARE TO A DANCER MEDIUM FOR EXAMPLE WHEN A RAY PASSED FROM AIR TO GLASS TO IT WILL CHANGE THEIR DIRECTION,,,
WHEN A RAY PASSED FROM RARE TO DENCER MEDIUM,,,,,,,THE ANGLE OF ANCIDENCE WILL BE GREATER THEN THE THE ANGLE OF ANCIDENT,,,AND VICE VERSA
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