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Why the Eye and Ear Are the Two Highest-Scoring Sense Organs
Of all the sense organs, the eye and the ear get asked about most often, and for a simple reason: they combine named, memorable parts (iris, retina, cochlea, the three smallest bones in the human body) with clean numbers (a hearing range of 20 Hz to 20,000 Hz) and a small set of named defects that pair neatly with their corrective lenses. That combination — parts, numbers, defects — is exactly what General Science sections in SSC, Railway, BPSC and CTET-pattern papers like to test.
Both organs also connect directly to the nervous system: the eye's optic nerve and the ear's auditory nerve carry signals straight to the brain, which is why this topic sits naturally alongside brain and reflex-action questions rather than as an isolated 'organs' list to memorise blindly.
1. Which part of the eye contracts and expands to control the amount of light entering the pupil?
2. In myopia (near-sightedness), where does the image form, and which lens corrects it?
3. Hypermetropia (far-sightedness) is corrected using which type of lens?
4. The age-related eye defect in which the eye gradually loses its power of accommodation is called:
5. Which is the smallest bone in the entire human body, found in the middle ear?
6. What is the correct order of the three ear ossicles, from the eardrum inward?
7. Which part of the inner ear is responsible for hearing, as opposed to balance?
8. What is the approximate normal range of human hearing?