Hover or tap underlined Spanish terms to see their translation and exam tip.
El sextante es un instrumento:The marine sextant is an optical instrument:
Show the answer
Correct answer: b) Of double reflection designed for measuring angles.
Why it is correct
The marine sextant is a double-reflection optical instrument (light from the body reflects off the index mirror and then off the silvered half of the horizon glass) designed to measure angles (celestial altitudes and horizontal or vertical angles).
Why the others are not
- a) It uses two mirrors (double reflection), so an index-arm rotation α measures an angle 2α.
- c) A sextant measures angles (in degrees and minutes), not distances directly.
- d) It is neither single-reflection nor a direct distance meter.
How to work it out in the exam
- Sextant: double-reflection optical instrument designed for measuring angles.
Where this question comes from
- Ministerio de Transportes (Madrid) · 2021 · Convocatoria de diciembre · CY Test 1 · question 9 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2021 · Convocatoria de diciembre · CY Test 3 · question 7 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.