Question

the angle between the incident ray and the reflected ray is 80 degree what is the angle of reflection?

Answer 1

Answer:

Explanation:

we know angle of incidence(i)=angle of reflection(v)

given, The angle between incident ray and reflected ray is 120⁰

           given,   i+v=120⁰

       we know i=v

   hence i=v=80⁰/2=40°

hope this helps u :-)

Answer 2

Answer:

Hence, angles of reflection = < r = 40°

Explanation:

We know that, by laws of reflection,

Angle of incidence = Angle of reflection

=> < i = < r

Given, angle between incident ray and reflected = 80°

So,

Angle between the incident ray = Angle of incidence + Angle of reflection = < i + < r

=> <i + <r = 80°

By applying laws of reflection, we get,

=> <r + <r = 80°

=> 2 < r = 80°

=> < r = 80/2 = 40°

Hence, angles of reflection = < r = 40°

So, angles of incidence = < i = < r = 40°>