MCQ
While tracing the path of a ray of light passing through a rectangular glass slab student tabulated his observations given below:
The correct observation is :
|
S. No.
|
$\angle \text{ i}$
|
$\angle \text{ r}$
|
$\angle \text{ e}$
|
| $I$ |
$60^{0}$
|
$40^{0}$
|
$61^{0}$
|
| $II$ |
$50^{0}$
|
$36^{0}$
|
$51^{0}$
|
| $III$ |
$40^{0}$
|
$28^{0}$
|
$39^{0}$
|
| $IV$ |
$30^{0}$
|
$20^{0}$
|
$31^{0}$
|
- A$I$
- B$II$
- C$III$
- ✓$IV$