alleryThe near point of a young adult with normal vision is about:
- 5 cm
- 25 cm
- 50 cm
- 100 cm
Show answer and solution
Correct answer: B. 25 cm
A normal young adult's least distance of distinct vision is approximately 25 cm.
ICSE Class 10 Human Anatomy & Coordination — practice questions — page 9
Explore 336 free Human Anatomy & Coordination questions in ICSE Class 10 Biology. Open each question or exercise to read its content, reference answers and available explanation.
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The near point of a young adult with normal vision is about:Read the answer and worked solution →For a normal eye, the far point is at:Read the answer and worked solution →Accommodation of the eye means adjusting its lens's:Read the answer and worked solution →Which defect allows clear near vision but blurs distant objects?Read the answer and worked solution →Age-related loss of the eye's accommodation is called:Read the answer and worked solution →Clouding of the crystalline lens is characteristic of:Read the answer and worked solution →Unequal curvature of the cornea can cause which defect?Read the answer and worked solution →Which external ear structure gathers sound into the canal?Read the answer and worked solution →What first vibrates when sound reaches the end of the ear canal?Read the answer and worked solution →How many small ossicles are present in one middle ear?Read the answer and worked solution →Which ear ossicle is also called the hammer?Read the answer and worked solution →The Eustachian tube connects the middle ear to the:Read the answer and worked solution →Which spiral-shaped inner-ear structure serves hearing?Read the answer and worked solution →The hearing receptor hair cells lie in the:Read the answer and worked solution →Which inner-ear structures sense head rotation for balance?Read the answer and worked solution →Which neural division carries commands to skeletal muscles?Read the answer and worked solution →A typical neuron conducts impulses mainly in which order?Read the answer and worked solution →Most refraction as light enters a normal eye occurs at the:Read the answer and worked solution →Improving vision after time in darkness depends strongly on adaptation of:Read the answer and worked solution →For a nearby object, the ciliary muscles and lens normally become:Read the answer and worked solution →Which spectacle lens corrects simple myopia?Read the answer and worked solution →Simple hypermetropia is corrected using a suitable:Read the answer and worked solution →An excessively long eyeball can put a distant object's focus:Read the answer and worked solution →A too-short eyeball may focus rays from a nearby object:Read the answer and worked solution →Which is the correct order of the middle-ear ossicles from the eardrum?Read the answer and worked solution →Which ossicle's base rests on the oval window?Read the answer and worked solution →The round window chiefly permits:Read the answer and worked solution →The middle-ear cavity and inner-ear channels normally contain:Read the answer and worked solution →Which pair of inner-ear parts helps sense static balance?Read the answer and worked solution →The three semicircular canals are arranged approximately:Read the answer and worked solution →
Worked practice questions
For a normal eye, the far point is at:
- 25 cm
- Infinity
- 100 cm
- 10 metres
Show answer and solution
Correct answer: B. Infinity
A normal eye can focus parallel rays from objects effectively at infinity.
Accommodation of the eye means adjusting its lens's:
- Transparency
- Material density
- Pigmentation
- Focal length
Show answer and solution
Correct answer: D. Focal length
Accommodation adjusts the lens's focal length so objects at different distances can be focused.
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