12th Class Physics Ray Optics Question Bank Ray Optics Conceptual Problems

  • question_answer
    In a telescope, the objective has a large aperture while the eyepiece has a small aperture. Why?

    Answer:

                    The objective of large aperture has a large light gathering capacity and it forms bright images of even distant faint stars. Moreover, the large aperture of the objective increases the resolving power of the telescope. The eyepiece of small aperture is taken so that entire light forming the final image may enter the small pupil of the eye and a brighter image is seen.


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