Concept explainers
(a)
The lenses from given figure which are convex or converging lenses.
(a)
Explanation of Solution
Introduction:
Parallel light rays are converged by converging lens at focal point of focus.This lens can form real or virtual image.
  
If either the sides or one side of the lens is curved, then it is converging lens. Also, converging lens have center part thicker than its edges. Here, in figure a andc lens have curved surface, so they are converging or convex lens.
Conclusion:
Figure a and care converging.
(b)
The lenses from given figure which are concavediverging lenses.
(b)
Explanation of Solution
Introduction:
Parallel light rays are diverging by diverging lens at focal point of focus.This lens can form real or virtual image.
  
If both sides or one side of the lens is curvedinwards then it is diverging lens. Also diverging lenses haveedges part thicker than its center. Here in figure, b and d lens have curved surface so they are diverging or concave lens.
Conclusion:
Figure b and d are diverging.
Chapter 18 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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Sears And Zemansky's University Physics With Modern Physics
College Physics: A Strategic Approach (4th Edition)
Conceptual Physics (12th Edition)
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
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