<em>When a wave meets a boundary, the angle of the reflected wave is equal to the angle of the incident wave</em>
<h3><u>Explanation</u>;</h3>
<em><u>Reflection is the property of waves in which the waves bounces back upon meeting or hitting the surface of an object or a boundary.</u></em> It may also refer to the change in the direction of a wave when it meets an interface between two media.
Therefore, when a wave such as light waves meets an opaque surface, they will bounce back off the surface.
<em><u>The reflection of waves obeys the Laws of reflection such that the angle of reflection is equal to the angle of incident wave.</u></em>
%d is a format specifier that is a placeholder for an int value. It tells the compiler that we want to print an integer value that is present in variable a. In this way there are several format specifiers in c.
