Refraction Of Light

REFRACTION OF LIGHT


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RULES FOR OBTAINING IMAGES FORMED BY SPHERICAL LENSES


    Following are the rules which are used for obtaining the images formed by spherical lenses.

  1. A ray of light from the object parallel to the principal axis of a lens passes through the principal focus (of a convex lens) or appears to pass through the principal focus (of a concave lens) after refraction.

  2. Rule 1 For Obtaining Images Formed By Spherical Lenses

  3. A ray of light passing through the optical centre of a lens goes straight without any deviation after refraction.

  4. Rule 2 For Obtaining Images Formed By Spherical Lenses

  5. A ray of light passing through the principal focus (of a convex lens) or appearing to pass through the principal focus (of a concave lens) emerges parallel to the principal axis after refraction.

  6. Rule 3 For Obtaining Images Formed By Spherical Lenses



Test Your Understanding and Answer These Questions:




  1. What are the rules for obtaining images formed by spherical lenses?



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