Multiple choice

In which of the following the final image is erect?

  1. Galilean telescope

  2. Compound microscope

  3. Astronomical telescope

  4. All the above
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A Correct answer
Explanation

A Galilean telescope uses a converging objective lens and a diverging (concave) eyepiece lens. The concave lens intercepts the rays before they form an inverted image, resulting in a final virtual image that is erect. Compound microscopes and astronomical telescopes typically produce inverted final images.

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