Question

10. In the given figure, two mirrors P and Q are situated at an angle of 60°
with each other and a ray of light is incident on mirror P at an angle of 55º.
What is the value of angle A if the ray again reflected by the mirror
Q?
60
Q
5-5).​

Answer 1

Answer:

angle of incidence =90-55=35

angle of reflection =35

angle Ray makes with mirror p=90-35=55

angle inside triangle=180-(55+60)=65

angle of incidence on mirror Q=90-65=25

angle of reflection=25

angle A=50