Page 3 - Competency Based Worksheet- Light

13. a) Differentiate between the reflections that occur
on two surfaces S1 and S2 (any two points).
b) How many images of an object are formed
when it is placed between two plane mirrors
inclined at the following angles:
i) 45°
ii) 60°

14. a) On which surface does irregular
reflection take place?
b) Which surface (S1 or S2) follows the laws of
reflection?
c) On which surface will a clear image be
formed?

15. In the given figure, the walls are either parallel or perpendicular to one another. If the
angle made by the incident ray with surface 1 is 60
degrees, find the angle of reflection at surface 3