Sagot :
Explanation:
There are twelve marks on a clock.
There are 360 degrees on a clock face.
So therefore, 360/12 = 30 degrees.
No angle between 12 and 5 is 30 *5 = 150 degrees.
So your angle of incidence should be 150 degrees to reflect the light at 5.
And angle of incidence = angle of reflection. So angle r = 150 as well.