InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
While tracing the path of a ray of light passing through a reactangular glass slab astudent tabulated his observations. If in his experiment for two readings he takes twovalues of Li as 40 ° and 50°, what should be the correct values of Le and r in eachcase ? |
|
Answer» We know that for light the angle of incidence(i) should be equal to angle of emergence(e) Hence angle of emergence (e) should also be 40° and 50° respectively. For glass the refractive index is 1.5, hence sin i/sin r = 1.5 => sin r = sin i /1.5 a) For i= 40 Sin r = sin 40/1.5 = 0.64/1.5 = 0.428 => r = sin⁻¹ 0.428 = 25.37° b) for i = 50° sin r = sin 50/1.5 = 0.766/1.5 = 0.51 => r = sin⁻¹ 0.51 = 30.7° Hence the value of r should be 25.37° and 30.7° respectively. not understanding the solution |
|