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Ray Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsRay Optics1 Mark
MCQ
When light rays from the sun fall on a convex lens along a direction parallel to its axis
  • A
    Focal length for all colours is the same
  • ✓
    Focal length for violet colour is the shortest
  • C
    Focal length for yellow colour is the longest
  • D
    Focal length for red colour is the shortest
✓

Answer

Correct option: B.
Focal length for violet colour is the shortest
Focal length for voilet colour is minimum

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