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Ray Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsRay Optics1 Mark
MCQ
Minimum deviation is observed with a prism having angle of prism $A$, angle of deviation $\delta$, angle of incidence $i$ and angle of emergence e. We then have generally
  • A
    $i>e$
  • B
    $i<\mathrm{e}$
  • ✓
    $i=e$
  • D
    $i=e=\delta$
✓

Answer

Correct option: C.
$i=e$
In minimum deviation condition $\angle i=\angle e, \angle r_1=\angle r_2$

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