Multiple choice general knowledge What is Helioscope? An instrument for viewing on all sides Instrument for measuring time A wheel mounted on an axis capable of spinning rapidly Instrument to view the sun without eye injury Reveal answer Fill a bubble to check yourself D Correct answer Explanation A helioscope is an instrument specifically designed for viewing the sun without causing eye injury. The prefix 'helio-' refers to the sun. This instrument allows safe solar observation by filtering or projecting the sun's image.