12th Class Physics Wave Optics / तरंग प्रकाशिकी Question Bank Wave Optics Conceptual Problems

  • question_answer
    How does the resolving power of a telescope change if (i) the size of the aperture of the objective lens is increased, (ii) the focal length of the objective lens is decreased ?           

    Answer:

                    Resolving power of a telescope \[=\frac{D}{1.22\lambda }\]. (i) If the size of the aperture (D) of the objective lens is increased, the resolving power of the telescope increases. (ii) If the focal length of the objective lens is decreased, the resolving power of the telescope is not affected.


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