2021
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Karnataka
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Telangana
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Uttarakhand
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Delhi
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Detailed explanation-1: -The 3.6m Devasthal Optical Telescope is a custom-built instrument of great complexity. This telescope has the distinction of being largest telescope in India for study of celestial objects at optical wavelengths. It is a national facility installed at Devasthal in the district of Nainital, India.
Detailed explanation-2: -The 3.6m Devasthal (Hindi: ) Optical Telescope is a clear-aperture Ritchey–Chrétien telescope built by Aryabhatta Research Institute of Observational Sciences (ARIES) and is located at the Devasthal Observatory site near Nainital, Kumaon, India. ARIES operates another 1.3m telescope at the same location.
Detailed explanation-3: -The largest optical telescopes in the world are the W. M. Keck telescopes on top of the dormant volcano Mauna Kea in Hawaii. At an elevation of 13, 800 feet, the Keck telescopes are above much of the cloud cover.