Answer:

Explanation:
From the question we are told that:
Dimension of Wall:

Electric field 
Angle 
Generally the equation for electric Flux is mathematically given by



I think a reflected ray should be symmetrical so I believe your answer is 32 degrees
Answer:
the ratio of the angle subtended at the eye by the image formed by an optical instrument to that subtended at the eye by object when not viewed through the instrument.
Answer: Insulators if i'm correct.
Explanation: