Question

A nearsighted person wears their glasses to focus a telescope, viewing with their relaxed eye.

Without their glasses, which way should they move the eyepiece to focus, again viewing with their relaxed eye?

Answer 1

Nearsighted people uses concave lens to their glasses because whenever they look ( without glasses ) to any object ,the image formed before retina.

Now if nearsighted  person not using their glasses then he has to move eyepiece of telescope towards his eye to view the object.

moving of eyepiece of telescope towards his eye will increase magnification.

Because, magnification = height of image / height of object = hi/ho

increasing this magnification helps Nearsighted person to compensate concave lens and thus nearsighted  person( without glasses ) can focus any object just by moving eyepiece of telescope towards his eye.

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