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Ray Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsRay Optics1 Mark
MCQ
A light beam is being reflected by using two mirrors, as in a periscope used in submarines. If one of the mirrors rotates by an angle $\theta$, the reflected light will deviate from its original path by the angle
  • ✓
    $2 \theta$
  • B
    $0^{\circ}$
  • C
    $\theta$
  • D
    $4 \theta$
✓

Answer

Correct option: A.
$2 \theta$
When a mirror is rotated by an angle $\theta$, the reflected ray deviate from its original path by angle $2 \theta$.

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