Assertion (A): If the rays are diverging after emerging from a lens; the lens must be concave.  

Reason (R): The convex lens can give diverging rays.  

 

Answer 

 

  • It is not necessary that if the rays are diverging after emerging from the lens then the lens is concave.
  • In Convex lens , if object is between O ptical Center and F ocus, the rays are diverging
    convex-lens---object-between-optical-center-and-focus-(o-and-f)---teachoo.png
  • If the rays crossing the focal point of the convex lens, become diverging.  
  • Therefore, lenses can be concave or convex. 

 

Thus,

  • Assertion is false
  • Reasoning is true

So, the correct answer is (d)

  1. Class 10
  2. Chapter 10 Class 10 - Light - Reflection and Refraction (Term 1)

About the Author

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo