For hearing the loudest ticking sound heard by the ear, find the angle x in the Fig.12.4.

Question

Philoid · Accepted Answer

From the given figure,

We get, Angle of incidence = Angle of reflection

Thus, 50^o + x + x + 50^o = 180^o

2x + 100^o = 180^o

2x = 180^o – 100^o

2x = 80^o

x = 40^o

Therefore, Angle of reflection = 40^o