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Optics — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceOptics7 Marks
Question
Write short notes on
(i) Astronomical telescope
(ii) Terrestrial telescope.
✓

Answer

(i) Astronomical Telescope: An astronomical telescope is used to view heavenly bodies like stars, planets, galaxies and satellites.

(ii) Terrestrial Telescope: The image in an astronomical telescope is inverted. So, it is not suitable for viewing objects on the surface of the Earth. Therefore, a terrestrial telescope is used. It provides an erect image. The major difference between astronomical and terrestrial telescope is erecting the final image with respect to the object.

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