Question
Sat February 16, 2013 By:

1.At what angle a ray of light should strike the surface of glass, so that it does not suffer any refraction? 2. Define linear magnification.Does it have any unit?

Expert Reply
Mon February 18, 2013
1. For no refraction, the ray should ot make any angle to the normal.
2. No linear magnification is the ratio between the image size and object size.
hence no units.
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