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STD 12 - 9. Ray optics abd optical instruments — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 9. Ray optics abd optical instruments4 Marks
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
    ${0^o}$
  • C
    $\theta $
  • D
    $4\theta $
✓

Answer

Correct option: A.
$2\theta $
a
( a)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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