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Ray Optics and Optical Instruments — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsRay Optics and Optical Instruments1 Mark
MCQ
prism can produce a minimum deviation $\delta$ in a light beam. If three such prisms are combined, the minimum deviation that can be produced in this beam is:
  • A
    $0$
  • ✓
    $\delta$
  • C
    $2\delta$
  • D
    $3\delta$
✓

Answer

Correct option: B.
$\delta$

In combination $($refractive angles of prisms reversed with respect to each other$)$, the deviations through two prisms cancel out each other and the net deviation is due to the third prism only.

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