Saved Bookmarks
| 1. |
If a ray of light propagating in air strikes a glass slab at an angle of 60 degree with the surface of the slab,what is the angle of refraction ? |
|
Answer» i by SIN r1.5 = sin 30 by sin r3 by 2 = sin 30 by sin sin R sin r = 1/2 by 3/2 TWO and two are cancled sin r = 1 by 3r = sin² ( 1/3)r = 19.472∴ Hence Proved |
|