properly aligned, the bold arrow on the Ray Table is normal (at right an of the
ID: 1649807 • Letter: P
Question
properly aligned, the bold arrow on the Ray Table is normal (at right an of the reflecting surface. the plane 3. Rotate the Ray Table and observe the light ray. The angles of incidence 4. reflection are measured with respect to the normal to the reflecting surface, as shown and ren By rotating the Ray Table, set the angle of incidence to each of theset gure om ae Pata Table 1. For each angle of incidence, record the angle of reflection E2 shown normal (Retlection) e side of the your measurements with the incident ray coming from the Data Table Angle of Incidence 0t 80 10 20 30 4050 6070 90% Refleetion QUESTIONS 1. Are the results for the two trials the same? If not, to what do you attribute the differences? 2. Part of the law of reflection states that the incident ray, the normal and the reflected ray all lie in the same plane. Discuss how this is shown in your experiment. 3. What relationship holds between the angle of incidence and the angle of reflection?Explanation / Answer
question 1
no, both results are different because of
1. human error ( that can be rotation of table is not proper, or there can be some problem while noting down the readings.) or the positions from where the readings were noted.( different position might give different angle.)
2. light should be monochromatic for the accurate result.( it might possible that light is not a perfectly monochromatic).
3. presence of air can also vary the results. ( as speed of light varies in air(very slightly) as compare of vaccum).
question2
as we can see in the given figure that incident ray, reflected ray and normal all lie in a working(rotating) table, as working table itself is a plane , hence we can say that all lie in a plane.
question 3
relationship between angle of incidence and angle of reflection.
angle of incidence ( i ) is always equal to the angle of reflection ( r ).
therefore,
angle i = angle r
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