Allied & ICAR Exam Bank • ALLIED_2456MCQ • 2 Marks
Section 8: General Aptitude
Analytical & Spatial Aptitude
Subtopic: Spatial Reasoning & 3D Representations
Question Statement:
A ray of light reflects successively from two planar mirrors inclined at an angle theta. What is the total angular deviation delta experienced by the ray after two reflections?
Options:
(A) delta = 360 - 2*theta
(B) delta = 2*theta
(C) delta = 180 - theta
(D) delta = theta
Answer Key:
A
Step-by-Step Solution & Explanation
The total angular deviation after reflection from two mirrors inclined at angle theta is delta = 360 - 2*theta (or net change in heading is 2*theta depending on convention; 360 - 2*theta is standard total deviation).