CBSE X Physics Light - Reflection and Refraction
after tracing the path of a ray of light passing through a rectangular glass slab for 4 different values of the angle of incidence , a student reported his observations.
S. no. angle i angle r angle e
1 30* 19* 29*
2 40* 28* 40*
3 50* 36* 50*
4 60* 40* 59*
which is the best observation?
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