A student performed the experiment of glass slab and with different angles of incidence measured the angles of refraction and emergence in each case. He then recorded his observations as given in the table.
The correct observation is
S. No. |
Angle of incidence |
Angle of refraction |
Angle of emergence |
A
B
C
D |
30°
40°
50°
60° |
25°
42°
50°
60° |
30°
40°
50°
62° |
(1) A
(2) B
(3) C
(4) D