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5. Image formation bs lense

Guidelines for rays falling on the concave and convex lenses

  1. When a ray strikes concave or convex lenses obliquely at its pole, it continues to follow its path.
  2. When a ray, parallel to the principal axis strikes concave or convex lenses, the reflected ray passes through a focus on the principal axis.
  3. When a ray, passing through focus strikes concave or convex lenses, the reflected ray will pass parallel to the principal axis.

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